[1] A. Peruzzo, P. Shadbolt, N. Brunner, S. Popescu, J. L. O’Brien. A quantum delayed-choice experiment. Science, 338, 634(2012).
[2] J. S. Lundeen, B. Sutherland, A. Patel, C. Stewart, C. Bamber. Direct measurement of the quantum wavefunction. Nature, 474, 188(2011).
[3] S. Castelletto, B. C. Johnson, V. Ivády, N. Stavrias, T. Umeda, A. Gali, T. Ohshima. A silicon carbide room-temperature single-photon source. Nat. Mater., 13, 151(2014).
[4] X. Liu, M. C. Hersam. 2D materials for quantum information science. Nat. Rev. Mater., 4, 669(2019).
[5] N. V. Proscia, Z. Shotan, H. Jayakumar, P. Reddy, C. Cohen, M. Dollar, A. Alkauskas, M. Doherty, C. A. Meriles, V. M. Menon. Near-deterministic activation of room-temperature quantum emitters in hexagonal boron nitride. Optica, 5, 1128(2018).
[6] I. Aharonovich, D. Englund, M. Toth. Solid-state single-photon emitters. Nat. Photonics, 10, 631(2016).
[7] T. T. Tran, K. Bray, M. J. Ford, M. Toth, I. Aharonovich. Quantum emission from hexagonal boron nitride monolayers. Nat. Nanotechnol., 11, 37(2016).
[8] A. K. Geim, I. V. Grigorieva. Van der Waals heterostructures. Nature, 499, 419(2013).
[9] K. S. Novoselov, A. Mishchenko, A. Carvalho, A. H. Castro Neto. 2D materials and van der Waals heterostructures. Science, 353, aac9439(2016).
[10] C. R. Dean, A. F. Young, I. Meric, C. Lee, L. Wang, S. Sorgenfrei, K. Watanabe, T. Taniguchi, P. Kim, K. L. Shepard, J. Hone. Boron nitride substrates for high-quality graphene electronics. Nat. Nanotechnol., 5, 722(2010).
[11] C. R. Woods, L. Britnell, A. Eckmann, R. S. Ma, J. C. Lu, H. M. Guo, X. Lin, G. L. Yu, Y. Cao, R. V. Gorbachev, A. V. Kretinin, J. Park, L. A. Ponomarenko, M. I. Katsnelson, Y. N. Gornostyrev, K. Watanabe, T. Taniguchi, C. Casiraghi, H. J. Gao, A. K. Geim, K. S. Novoselov. Commensurate-incommensurate transition in graphene on hexagonal boron nitride. Nat. Phys., 10, 451(2014).
[12] A. S. Mayorov, R. V. Gorbachev, S. V. Morozov, L. Britnell, R. Jalil, L. A. Ponomarenko, P. Blake, K. S. Novoselov, K. Watanabe, T. Taniguchi, A. K. Geim. Micrometer-scale ballistic transport in encapsulated graphene at room temperature. Nano Lett., 11, 2396(2011).
[13] L. Britnell, R. V. Gorbachev, R. Jalil, B. D. Belle, F. Schedin, A. Mishchenko, T. Georgiou, M. I. Katsnelson, L. Eaves, S. V. Morozov, N. M. R. Peres, J. Leist, A. K. Geim, K. S. Novoselov, L. A. Ponomarenko. Field-effect tunneling transistor based on vertical graphene heterostructures. Science, 335, 947(2012).
[14] J. D. Caldwell, I. Aharonovich, G. Cassabois, J. H. Edgar, B. Gil, D. N. Basov. Photonics with hexagonal boron nitride. Nat. Rev. Mater., 4, 552(2019).
[15] L. Weston, D. Wickramaratne, M. Mackoit, A. Alkauskas, C. G. Van de Walle. Native point defects and impurities in hexagonal boron nitride. Phys. Rev. B, 97, 214104(2018).
[16] M. Atatüre, D. Englund, N. Vamivakas, S.-Y. Lee, J. Wrachtrup. Material platforms for spin-based photonic quantum technologies. Nat. Rev. Mater., 3, 38(2018).
[17] S. D. C. Wehner, D. Elkouss Coronas, R. Hanson. Quantum internet: a vision for the road ahead. Science, 362, 303(2018).
[18] S. Castelletto, F. A. Inam, S. I. Sato, A. Boretti. Hexagonal boron nitride: a review of the emerging material platform for single-photon sources and the spin-photon interface. Beilstein. J. Nanotechnol., 11, 740(2020).
[19] M. Toth, I. Aharonovich. Single photon sources in atomically thin materials. Annu. Rev. Phys. Chem., 70, 123(2019).
[20] K. S. Novoselov, D. Jiang, F. Schedin, T. J. Booth, V. V. Khotkevich, S. V. Morozov, A. K. Geim. Two-dimensional atomic crystals. Proc. Natl. Acad. Sci. USA, 102, 10451(2005).
[21] J. N. Coleman, M. Lotya, A. O’Neill, S. D. Bergin, P. J. King, U. Khan, K. Young, A. Gaucher, S. De, R. J. Smith, I. V. Shvets, S. K. Arora, G. Stanton, H.-Y. Kim, K. Lee, G. T. Kim, G. S. Duesberg, T. Hallam, J. J. Boland, J. J. Wang, J. F. Donegan, J. C. Grunlan, G. Moriarty, A. Shmeliov, R. J. Nicholls, J. M. Perkins, E. M. Grieveson, K. Theuwissen, D. W. McComb, P. D. Nellist, V. Nicolosi. Two-dimensional nanosheets produced by liquid exfoliation of layered materials. Science, 331, 568(2011).
[22] M. Koperski, K. Nogajewski, M. Potemski. Single photon emitters in boron nitride: more than a supplementary material. Opt. Commun., 411, 158(2018).
[23] A. Hernandez-Minguez, J. Laehnemann, S. Nakhaie, J. M. J. Lopes, P. Santos. Luminescent defects in a few-layer h-BN film grown by molecular beam epitaxy. Phys. Rev. Appl., 10, 044031(2018).
[24] N. Mendelson, Z. Q. Xu, T. T. Tran, M. Kianinia, J. Scott, C. Bradac, I. Aharonovich, M. Toth. Engineering and tuning of quantum emitters in few-layer hexagonal boron nitride. ACS Nano, 13, 3132(2019).
[25] L. Schue, L. Sponza, A. Plaud, H. Bensalah, K. Watanabe, T. Taniguchi, F. Ducastelle, A. Loiseau, J. Barjon. Bright luminescence from indirect and strongly bound excitons in h-BN. Phys. Rev. Lett., 122, 067401(2019).
[26] F. Hayee, L. Yu, J. L. Zhang, C. J. Ciccarino, M. Nguyen, A. F. Marshall, I. Aharonovich, J. Vuckovic, P. Narang, T. F. Heinz, J. A. Dionne. Revealing multiple classes of stable quantum emitters in hexagonal boron nitride with correlated optical and electron microscopy. Nat. Mater., 19, 534(2020).
[27] T. T. Tran, C. Elbadawi, D. Totonjian, C. J. Lobo, G. Grosso, H. Moon, D. R. Englund, M. J. Ford, I. Aharonovich, M. Toth. Robust multicolor single photon emission from point defects in hexagonal boron nitride. ACS Nano, 10, 7331(2016).
[28] G. Grosso, H. Moon, B. Lienhard, S. Ali, D. K. Efetov, M. M. Furchi, P. Jarillo-Herrero, M. J. Ford, I. Aharonovich, D. Englund. Tunable and high-purity room temperature single-photon emission from atomic defects in hexagonal boron nitride. Nat. Commun., 8, 705(2017).
[29] P. Dev. Fingerprinting quantum emitters in hexagonal boron nitride using strain. Phys. Rev. Res., 2, 022050(2020).
[30] N. Chejanovsky, M. Rezai, F. Paolucci, Y. Kim, T. Rendler, W. Rouabeh, F. Favaro de Oliveira, P. Herlinger, A. Denisenko, S. Yang, I. Gerhardt, A. Finkler, J. H. Smet, J. Wrachtrup. Structural attributes and photodynamics of visible spectrum quantum emitters in hexagonal boron nitride. Nano Lett., 16, 7037(2016).
[31] A. L. Exarhos, D. A. Hopper, R. R. Grote, A. Alkauskas, L. C. Bassett. Optical signatures of quantum emitters in suspended hexagonal boron nitride. ACS Nano, 11, 3328(2017).
[32] R. Bourrellier, S. Meuret, A. Tararan, O. Stéphan, M. Kociak, L. H. G. Tizei, A. Zobelli. Bright UV single photon emission at point defects in h-BN. Nano Lett., 16, 4317(2016).
[33] S. Choi, T. T. Tran, C. Elbadawi, C. Lobo, X. Wang, S. Juodkazis, G. Seniutinas, M. Toth, I. Aharonovich. Engineering and localization of quantum emitters in large hexagonal boron nitride layers. ACS Appl. Mater. Interfaces, 8, 29642(2016).
[34] L. J. Martínez, T. Pelini, V. Waselowski, J. R. Maze, B. Gil, G. Cassabois, V. Jacques. Efficient single photon emission from a high-purity hexagonal boron nitride crystal. Phys. Rev. B, 94, 121405(2016).
[35] D. Yim, M. Yu, G. Noh, J. Lee, H. Seo. Polarization and localization of single-photon emitters in hexagonal boron nitride wrinkles. ACS Appl. Mater. Interfaces, 12, 36362(2020).
[36] N. Mendelson, M. Doherty, M. Toth, I. Aharonovich, T. T. Tran. Strain-induced modification of the optical characteristics of quantum emitters in hexagonal boron nitride. Adv. Mat., 32, 1908316(2020).
[37] N. Mendelson, D. Chugh, J. R. Reimers, T. S. Cheng, A. Gottscholl, H. Long, C. J. Mellor, A. Zettl, V. Dyakonov, P. H. Beton, S. V. Novikov, C. Jagadish, H. H. Tan, M. J. Ford, M. Toth, C. Bradac, I. Aharonovich. Identifying carbon as the source of visible single-photon emission from hexagonal boron nitride. Nat. Mater., 20, 321(2021).
[38] K. Era, F. Minami, T. Kuzuba. Fast luminescence from carbon-related defects of hexagonal boron nitride. J. Lumin., 24–25, 71(1981).
[39] M. R. Uddin, J. Li, J. Y. Lin, H. X. Jiang. Probing carbon impurities in hexagonal boron nitride epilayers. Appl. Phys. Lett., 110, 182107(2017).
[40] X. Z. Du, J. Li, J. Y. Lin, H. X. Jiang. The origin of deep-level impurity transitions in hexagonal boron nitride. Appl. Phys. Lett., 106, 021110(2015).
[41] T. Korona, M. Chojecki. Exploring point defects in hexagonal boron-nitrogen monolayers. Int. J. Quantum Chem., 119, e25925(2019).
[42] M. Mackoit-Sinkeviciene, M. Maciaszek, C. G. Van de Walle, A. Alkauskas. Carbon dimer defect as a source of the 4.1 eV luminescence in hexagonal boron nitride. Appl. Phys. Lett., 115, 212101(2019).
[43] C. Jara, T. Rauch, S. Botti, M. A. L. Marques, A. Norambuena, R. Coto, J. E. Castellanos-Aguila, J. R. Maze, F. Munoz. First-principles identification of single photon emitters based on carbon clusters in hexagonal boron nitride. J. Phys. Chem. A, 125, 1325(2021).
[44] I. H. Abidi, N. Mendelson, T. T. Tran, A. Tyagi, M. Zhuang, L. T. Weng, B. Özyilmaz, I. Aharonovich, M. Toth, Z. Luo. Selective defect formation in hexagonal boron nitride. Adv. Opt. Mater., 7, 1900397(2019).
[45] R. Wang, D. G. Purdie, Y. Fan, F. C. P. Massabuau, P. Braeuninger-Weimer, O. J. Burton, R. Blume, R. Schloegl, A. Lombardo, R. S. Weatherup, S. Hofmann. A peeling approach for integrated manufacturing of large monolayer h-BN crystals. ACS Nano, 13, 2114(2019).
[46] C. Li, N. Mendelson, R. Ritika, Y. Chen, Z.-Q. Xu, M. Toth, I. Aharonovich. Scalable and deterministic fabrication of quantum emitter arrays from hexagonal boron nitride. Nano Lett., 21, 3626(2021).
[47] N. Mendelson, L. Morales-Inostroza, C. Li, R. Ritika, M. A. P. Nguyen, J. Loyola-Echeverria, S. Kim, S. Götzinger, M. Toth, I. Aharonovich. Grain dependent growth of bright quantum emitters in hexagonal boron nitride. Adv. Opt. Mater., 9, 2001271(2021).
[48] C. Fournier, A. Plaud, S. Roux, A. Pierret, M. Rosticher, K. Watanabe, T. Taniguchi, S. Buil, X. Quélin, J. Barjon, J.-P. Hermier, A. Delteil. Position-controlled quantum emitters with reproducible emission wavelength in hexagonal boron nitride. Nat. Commun., 12, 3779(2021).
[49] T. Vogl, G. Campbell, B. C. Buchler, Y. Lu, P. K. Lam. Fabrication and deterministic transfer of high-quality quantum emitters in hexagonal boron nitride. ACS Photonics, 5, 2305(2018).
[50] X. Li, G. D. Shepard, A. Cupo, N. Camporeale, K. Shayan, Y. Luo, V. Meunier, S. Strauf. Nonmagnetic quantum emitters in boron nitride with ultranarrow and sideband-free emission spectra. ACS Nano, 11, 6652(2017).
[51] J. Ziegler, R. Klaiss, A. Blaikie, D. Miller, V. R. Horowitz, B. J. Aleman. Deterministic quantum emitter formation in hexagonal boron nitride via controlled edge creation. Nano Lett., 19, 2121(2019).
[52] J. R. Toledo, D. B. de Jesus, M. Kianinia, A. S. Leal, C. Fantini, L. A. Cury, G. A. M. Sáfar, I. Aharonovich, K. Krambrock. Electron paramagnetic resonance signature of point defects in neutron-irradiated hexagonal boron nitride. Phys. Rev. B, 98, 155203(2018).
[53] Z. Q. Xu, C. Elbadawi, T. T. Tran, M. Kianinia, X. Li, D. Liu, T. B. Hoffman, M. Nguyen, S. Kim, J. H. Edgar, X. Wu, L. Song, S. Ali, M. Ford, M. Toth, I. Aharonovich. Single photon emission from plasma treated 2D hexagonal boron nitride. Nanoscale, 10, 7957(2018).
[54] C. Li, Z.-Q. Xu, N. Mendelson, M. Kianinia, M. Toth, I. Aharonovich. Purification of single-photon emission from hBN using post-processing treatments. Nanophotonics, 8, 2049(2019).
[55] R. Roldan, A. Castellanos-Gomez, E. Cappelluti, F. Guinea. Strain engineering in semiconducting two-dimensional crystals. J. Phys. Condens. Matter, 27, 313201(2015).
[56] Y. Fujimoto, S. Saito. Band engineering and relative stabilities of hexagonal boron nitride bilayers under biaxial strain. Phys. Rev. B, 94, 245427(2016).
[57] C. Androulidakis, E. N. Koukaras, M. Poss, K. Papagelis, C. Galiotis, S. Tawfick. Strained hexagonal boron nitride: phonon shift and Grüneisen parameter. Phys. Rev. B, 97, 241414(2018).
[58] Y. Fujimoto, S. Saito. Effects of strain on carbon donors and acceptors in hexagonal boron nitride monolayers. Phys. Rev. B, 93, 045402(2016).
[59] O. Frank, G. Tsoukleri, I. Riaz, K. Papagelis, J. Parthenios, A. C. Ferrari, A. K. Geim, K. S. Novoselov, C. Galiotis. Development of a universal stress sensor for graphene and carbon fibres. Nat. Commun., 2, 255(2011).
[60] Y. Xue, H. Wang, Q. Tan, J. Zhang, T. Yu, K. Ding, D. Jiang, X. Dou, J. J. Shi, B. Q. Sun. Anomalous pressure characteristics of defects in hexagonal boron nitride flakes. ACS Nano, 12, 7127(2018).
[61] N. Mendelson, M. Doherty, M. Toth, I. Aharonovich, T. T. Tran. Strain-induced modification of the optical characteristics of quantum emitters in hexagonal boron nitride. Adv. Mater., 32, 1908316(2020).
[62] W. Hu, X. Cao, Y. Zhang, T. Li, J. Jiang, Y. Luo. Tunable single-photon emission by defective boron-nitride nanotubes for high-precision force detection. J. Phys. Chem. C, 123, 9624(2019).
[63] J. P. Perdew, K. Burke, M. Ernzerhof. Generalized gradient approximation made simple. Phys. Rev. Lett., 77, 3865(1996).
[64] N. Chejanovsky, Y. Kim, A. Zappe, B. Stuhlhofer, T. Taniguchi, K. Watanabe, D. Dasari, A. Finkler, J. H. Smet, J. Wrachtrup. Quantum light in curved low dimensional hexagonal boron nitride systems. Sci. Rep., 7, 14758(2017).
[65] L. Lindsay, D. A. Broido. Theory of thermal transport in multilayer hexagonal boron nitride and nanotubes. Phys. Rev. B, 85, 035436(2012).
[66] F. Iikawa, A. Hernández-Mínguez, I. Aharonovich, S. Nakhaie, Y.-T. Liou, J. M. J. Lopes, P. V. Santos. Acoustically modulated optical emission of hexagonal boron nitride layers. Appl. Phys. Lett., 114, 171104(2019).
[67] Y. Xia, Q. Li, J. Kim, W. Bao, C. Gong, S. Yang, Y. Wang, X. Zhang. Room-temperature giant Stark effect of single photon emitter in van der Waals material. Nano Lett., 19, 7100(2019).
[68] G. Noh, D. Choi, J. H. Kim, D. G. Im, Y. H. Kim, H. Seo, J. Lee. Stark tuning of single-photon emitters in hexagonal boron nitride. Nano Lett., 18, 4710(2018).
[69] N. Nikolay, N. Mendelson, N. Sadzak, F. Böhm, T. T. Tran, B. Sontheimer, I. Aharonovich, O. Benson. Very large and reversible Stark-shift tuning of single emitters in layered hexagonal boron nitride. Phys. Rev. Appl., 11, 041001(2019).
[70] N. R. Jungwirth, B. Calderon, Y. Ji, M. G. Spencer, M. E. Flatte, G. D. Fuchs. Temperature dependence of wavelength selectable zero-phonon emission from single defects in hexagonal boron nitride. Nano Lett., 16, 6052(2016).
[71] Y. Chen, T. N. Tran, N. M. H. Duong, C. Li, M. Toth, C. Bradac, I. Aharonovich, A. Solntsev, T. T. Tran. Optical thermometry with quantum emitters in hexagonal boron nitride. ACS Appl. Mater. Interfaces, 12, 25464(2020).
[72] H. Akbari, W.-H. Lin, B. Vest, P. K. Jha, H. A. Atwater. Temperature-dependent spectral emission of hexagonal boron nitride quantum emitters on conductive and dielectric substrates. Phys. Rev. Appl., 15, 014036(2021).
[73] A. L. Exarhos, D. A. Hopper, R. N. Patel, M. W. Doherty, L. C. Bassett. Magnetic-field-dependent quantum emission in hexagonal boron nitride at room temperature. Nat. Commun., 10, 222(2019).
[74] M. Fanciulli. Electron paramagnetic resonance and relaxation in BN and BN: C. Philos. Mag. B, 76, 363(1997).
[75] P. Khatri, A. J. Ramsay, R. N. E. Malein, H. M. H. Chong, I. J. Luxmoore. Optical gating of photoluminescence from color centers in hexagonal boron nitride. Nano Lett., 20, 4256(2020).
[76] Z. Shotan, H. Jayakumar, C. R. Considine, M. Mackoit, H. Fedder, J. Wrachtrup, A. Alkauskas, M. W. Doherty, V. M. Menon, C. A. Meriles. Photoinduced modification of single-photon emitters in hexagonal boron nitride. ACS Photonics, 3, 2490(2016).
[77] T. T. Tran, D. Wang, Z. Q. Xu, A. Yang, M. Toth, T. W. Odom, I. Aharonovich. Deterministic coupling of quantum emitters in 2D materials to plasmonic nanocavity arrays. Nano Lett., 17, 2634(2017).
[78] N. V. Proscia, R. J. Collison, C. A. Meriles, V. M. Menon. Coupling of deterministically activated quantum emitters in hexagonal boron nitride to plasmonic surface lattice resonances. Nanophotonics, 8, 2057(2019).
[79] M. Nguyen, S. Kim, T. T. Tran, Z. Q. Xu, M. Kianinia, M. Toth, I. Aharonovich. Nanoassembly of quantum emitters in hexagonal boron nitride and gold nanospheres. Nanoscale, 10, 2267(2018).
[80] N. Palombo Blascetta, M. Liebel, X. Lu, T. Taniguchi, K. Watanabe, D. K. Efetov, N. F. van Hulst. Nanoscale imaging and control of hexagonal boron nitride single photon emitters by a resonant nanoantenna. Nano Lett., 20, 1992(2020).
[81] X. Li, R. A. Scully, K. Shayan, Y. Luo, S. Strauf. Near-unity light collection efficiency from quantum emitters in boron nitride by coupling to metallo-dielectric antennas. ACS Nano, 13, 6992(2019).
[82] N. V. Proscia, H. Jayakumar, X. Ge, G. Lopez-Morales, Z. Shotan, W. Zhou, C. A. Meriles, V. M. Menon. Microcavity-coupled emitters in hexagonal boron nitride. Nanophotonics, 9, 2937(2020).
[83] J. E. Froch, S. Kim, N. Mendelson, M. Kianinia, M. Toth, I. Aharonovich. Coupling hexagonal boron nitride quantum emitters to photonic crystal cavities. ACS Nano, 14, 7085(2020).
[84] T. Vogl, R. Lecamwasam, B. C. Buchler, Y. Lu, P. K. Lam. Compact cavity-enhanced single-photon generation with hexagonal boron nitride. ACS Photonics, 6, 1955(2019).
[85] A. W. Schell, H. Takashima, T. T. Tran, I. Aharonovich, S. Takeuchi. Coupling quantum emitters in 2D materials with tapered fibers. ACS Photonics, 4, 761(2017).
[86] S. Häußler, G. Bayer, R. Waltrich, N. Mendelson, C. Li, D. Hunger, I. Aharonovich, A. Kubanek. Tunable fiber-cavity enhanced photon emission from defect centers in hBN. Adv. Opt. Mater., 9, 2002218(2021).
[87] Y. Chen, X. Xu, C. Li, A. Bendavid, M. T. Westerhausen, C. Bradac, M. Toth, I. Aharonovich, T. T. Tran. Bottom-up synthesis of hexagonal boron nitride nanoparticles with intensity-stabilized quantum emitters. Small, 17, 2008062(2021).
[88] M. Abdi, M. B. Plenio. Quantum effects in a mechanically modulated single-photon emitter. Phys. Rev. Lett., 122, 023602(2019).
[89] J. Ziegler, A. Blaikie, A. Fathalizadeh, D. Miller, F. S. Yasin, K. Williams, J. Mohrhardt, B. J. McMorran, A. Zettl, B. Aleman. Single-photon emitters in boron nitride nanococoons. Nano Lett., 18, 2683(2018).
[90] M. Herrero-Collantes, J. C. Garcia-Escartin. Quantum random number generators. Rev. Mod. Phys., 89, 015004(2017).
[91] T. Jennewein, U. Achleitner, G. Weihs, H. Weinfurter, A. Zeilinger. A fast and compact quantum random number generator. Rev. Sci. Instrum., 71, 1675(2000).
[92] M. Hoese, M. K. Koch, F. Breuning, N. Lettner, K. G. Fehler, A. Kubanek. Single photon randomness originating from the symmetry of dipole emission and the unpredictability of spontaneous emission(2021).
[93] R. D. Sorkin. Quantum mechanics as quantum measure theory. Mod. Phys. Lett. A, 09, 3119(1994).
[94] T. Kauten, R. Keil, T. Kaufmann, B. Pressl, Č. Brukner, G. Weihs. Obtaining tight bounds on higher-order interferences with a 5-path interferometer. New J. Phys., 19, 033017(2017).
[95] T. Vogl, H. Knopf, M. Weissflog, P. K. Lam, F. Eilenberger. Sensitive single-photon test of extended quantum theory with two-dimensional hexagonal boron nitride. Phys. Rev. Res., 3, 013296(2021).
