Publications

Journal papers

1. A Gali et al, "Challenges in advancing our understanding of atomic-like quantum systems: Theory and experiment," MRS Bulletin 49, 256-276 (2024). 

2. S. Gupta, Y. Huang, S. Liu, Y. Pei, N. Tomm, R. Warburton, T. Zhong, "Dual epitaxial telecom spin-photon interfaces with correlated long-lived coherence," arXiv: 2310.07120 (2023).

3. Y. Lei, F. K. Asadi, T. Zhong, A. Kuzmich, C. Simon, M. Hosseini, "Quantum Optical Memory for Entanglement Distribution," arXiv:2304.09397 Optica 10, 1511-1528 (2023).

4. E. Poem, S. Gupta, I. Morris, K. Klink, L. Singh, T. Zhong, J. N. Becker, and O. Firstenberg, "Transition metal ion ensembles in crystals as solid-state coherent spin-photon interfaces: The case of nickel in magnesium oxide," PRX Quantum 4, 030329 (2023).

5. "A Road map for quantum interconnects"  https://www.osti.gov/servlets/purl/1900586 (2022).

6. H.-K. Lau, H. Qiao, A. A. Clerk, T. Zhong,  "Efficient in-situ generation of photon-memory entanglement in a nonlinear cavity," arXiv:2208.00886 (2022).

7. S. Gupta, X. Wu, H. Zhang, J. Yang, T. Zhong, "Robust millisecond coherence times of erbium electron spins," Phys. Rev. Applied 19, 044029 (2023).

8. T. Rajh, S. Lei, S. Gupta, H. Zhang, J. Yang, T. Zhong,  "Hyperfine Interactions and Coherent Spin Dynamics of Isotopically Purified 167Er in Polycrystalline Y2O3," Materials for Quantum Technologies DOI 10.1088/2633-4356/ac9e86 (2022).

9. X. Wu, A. Kolar, J. Chung, D. Jin, T. Zhong, R. Kettimuthu, M. Suchara, "SeQUeNCe: a customizable discrete-event simulator of quantum networks," Quantum Science and Technology 6, 045027 (2021).

10. K.-C. Chang, X. Cheng, M. Sarihan, A. Vinod, Y. Lee, T. Zhong, Y. Gong, Z. Xie, J. H. Shapiro, F. NC Wong, C. W. Wong, "648 Hilbert-space dimensionality in a biphoton frequency comb: entanglement of formation and Schmidt mode decomposition,"  npj Quantum Information, 7, 1-11 (2021).

11. R. Fukumori, Y. Huang, J. Yang, H. Zhang and T. Zhong, "Subkilohertz optical homogeneous linewidth and dephasing mechanisms in Er3+:Y2O3 ceramics," Phys. Rev. B 101, 214202 (2020) Editors' Suggestion.

12. M. K. Singh, A. Prakash, G. Wolfowicz, J. Wen, Y. Huang, T. Rajh*, D. D. Awschalom, T. Zhong*, S. Guha*, "Epitaxial Er-doped Y2O3 on silicon for quantum coherent devices," APL Materials 8, 031111 (2020). *co-corresponding authors

13. T. Zhong and Ph. Goldner, "Emerging rare-earth doped material platforms for quantum nanophotonics," Nanophotonics  8, 2003-2015, DOI:https://doi.org/10.1515/nanoph-2019-0185 (2019).

14. I. Craiciu, et al. Nanophotonic quantum storage at telecommunication wavelength, Phys. Rev. Applied 12, 024062 (2019).

15. T. Zhong, et al. "Optical addressing of single rare-earth ions in a nanophotonic cavity," Phys. Rev. Lett. 121, 183603 (2018).

16. J. M. Kindem, J. G. Bartholomew, Ph. JT Woodburn, T. Zhong, I. Craiciu, R. L. Cone, C. W. Thiel, A. Faraon, "Characterization of 171Yb3+:YVO4 for photonic quantum technologies," Phys. Rev. B 98, 024404 (2018). Editor's Suggestion.

Prior to Zhong Lab

17. T. Zhong, et al. "Nanophotonic quantum memory with optically controlled retrieval," Science 357, 1392-1395 (2017). Science News; Physics.org; Caltech News; Physicsworld; IEEE Spectrum; Wired; EurekAlert.

18. T. Zhong, J. M. Kindem, J. Rochman, and A. Faraon,"On-chip storage of broadband photonic qubits in a cavity-protected rare-earth ensemble," Nature Commun. 8, 14107 (2017). 

19. C. O'Brien, T. Zhong, A.Faraon, and C. Simon, "Non-destructive photon detection using a single rare earth ion coupled to a photonic cavity," Phys. Rev. A. 94, 043807 (2016).

20. T. Zhong, J. Rochman, J. M. Kindem, and A. Faraon, "High quality factor nanophotonic resonators in bulk rare-earth doped crystals," Opt. Express 24, 536-544 (2016).

21. E. Miyazono, T. Zhong, I. Craiciu, J. M. Kindem, and A. Faraon, "Coupling of erbium dopants to yttrium orthosilicate photonic crystal cavities for on-chip optical quantum memories," Appl. Phys. Lett. 108, 011111 (2016).

22. T. Zhong, J. Kindem, E. Miyazono, and A. Faraon, “Nanophotonic quantum light-matter interface based on Rare-Earth doped crystals,” Nature Commun. 6, 8206 (2015).

23. Z. Xie*, T. Zhong*, X. Xu, J. Liang, Y. Gong, J. Shapiro, F. Wong, and C. W. Wong, “Harnessing high-dimensional hyperentanglement through a biphoton frequency comb,” Nature Photon. 9, 536-542 (2015). News and media: Nature photonics; Phys.org; EurekAlert; ScienceDaily

24. T. Zhong, H. Zhou, R. D. Horansky, C. Lee, V. B. Verma, A. E. Lita, A. Restelli, J. C. Bienfang, R. P. Mirin, T. Gerrits, S. W. Nam, F. Marsili, M. D. Shaw, Z. Zhang, L. Wang, D. Englund, G. W. Wornell, J. H. Shapiro, and F. N. C. Wong, “Photon efficient high-dimensional quantum key distribution,” New J. Phys. 17, 022002 (2015). Fast Track Communications

25. X. Hu, T. Zhong, F. N. C. Wong, X. Mao, P. Kharel, Z. Xie, X. Xu, C. W. Wong, and D. R. Englund, “Nonlocal cancellation of multi-frequency-channel dispersion,” Phys. Rev. A 91, 013809 (2015).

26. C. Lee, Z. Zhang, G. R. Steinbrecher, H. Zhou, J. Mower, T. Zhong, L. Wang, X. Hu, R. D. Horansky, V. B. Verma, A. E. Lita, R. P. Mirin, F. Marsili, M. D. Shaw, S. W. Nam, G. W. Wornell, F. N. C. Wong, J. H. Shapiro, and D. Englund, "Entanglement-based quantum communication secured by nonlocal dispersion cancellation," Phys. Rev. A 90, 062331 (2014).

27. T. Zhong, and F. N. C. Wong, “Nonlocal cancellation of dispersion in Franson interferometry,” Phys. Rev. A 88, 020103(R) (2013). Rapid communications

28. Z. Zhang, M. Tengner, T. Zhong, F. N. C. Wong and J. H. Shapiro, “Entanglement’s benefit survives an entanglement-breaking channel,” Phys. Rev. Lett. 111, 010501 (2013).

29. X. Xu, Z. Xie, J. Zheng, J. Liang, T. Zhong, M. Yu, S. Kocaman, G. Lo, D. Kwong, D. R. Englund, F. N. C. Wong, and C. W. Wong, “Near-infrared Hong-Ou-Mandel interference on a silicon quantum photonic chip,” Opt. Express 21, 5014-5024 (2013).

30. T. Zhong, F. N. C. Wong, A. Restelli and J. C. Bienfang, “Efficient single-spatial-mode PPKTP waveguide source for high dimensional entanglement-based QKD,” Opt. Express 20, 26868-26877 (2012).

31. T. Zhong, X. Hu, F. N. C. Wong, K. K. Berggren, T. D. Roberts, and P. Battle, “High-quality fiber-optic polarization entanglement distribution at 1.3 μm telecom wavelength," Opt. Lett. 35, 1392-1394 (2010).

32. X. Hu, T. Zhong, J. E. White, E. A. Dauler, F. Najafi, C. H. Herder, F. N. C. Wong, and K. K. Berggren, "Fiber-coupled nanowire photon counter at 1550 nm with 24% system detection efficiency," Opt. Lett. 34, 3607-3609 (2009)

33. T. Zhong, F. N. C. Wong, T. D. Roberts, and P. Battle, “High performance photon-pair source based on a fiber-coupled periodically poled KTiOPO4 waveguide,” Opt. Express 17, 12019-12030 (2009).

34. W. M. Zhu, T. Zhong, A. Q. Liu and X. M Zhang, “Micromachined optical well structure for thermo-optic switching,” Appl. Phys. Lett. 91, 261106 (2007).

35. T. Zhong, X. M. Zhang, J. Li and A. Q. Liu. “Thermal-optic switch by total-internal reflection of micromachined silicon prism,” IEEE J. Sel. Topics Quantum Electron. 11, 348-358 (2007).

36. J. Li, X. M. Zhang, A. Q. Liu, and T. Zhong, “Light switching via thermos-optic effect of micromachined silicon prism,” Appl. Phys. Lett. 88, 243501 (2006).

Conference proceedings

1. T. Zhong, "Epitaxial rare-earth quantum material and devices", SPIE Optics + Photonics, San Diego CA, USA.

2. T. Zhong. et al, “A nanophotonic platform integrating quantum memories and single rare-earth ions,” CLEO 2018, JTh3C.3, San Jose CA, USA.

3. T. Zhong. et al, “Nanophotonic atomic-frequency-comb quantum memory based on a rare-earth doped photonic crystal cavity,” CLEO 2017, FW1E.3, San Jose CA, USA.

4. T. Zhong, J. Kindem, J. Rochman, and A. Faraon, “Broadband nanophotonic quantum interface with cavity-protected rare-earth ensembles,” Southwest Quantum Information Technology (SQuInt 2017), Feb. 23 2017, Barton Rouge, LA USA.

5. T. Zhong, J. Kindem, J. Rochman, A. Ferrier, P. Goldner, and A. Faraon, “Towards an efficient nanophotonic platform integrating quantum memories and single qubits based on rare-earth ions,” SPIE Photonics West 2017, Feb. 2 2017, San Fransicsco CA, USA.

6. T. Zhong, J. Kindem, J. Rochman and A. Faraon, “Broadband photonic quantum interface based on a cavity-protected rare-earth ensemble,” SPIE Photonics West 2017, Feb. 2 2017, San Fransicsco CA, USA.

7. T. Zhong. J. Kindem, E. Miyazono, A. Faraon, “50 GHz quantum photonic storage in a cavity-protected rare-earth ensemble,” CLEO 2016, Jun. 9-11 2016, San Jose CA, USA.

8. T. Zhong, J. Kindem, J. Rochman, and A. Faraon, “Broadband nanophotonic quantum interface with cavity-protected rare-earth ensembles,” Southwest Quantum Information Technology (SQuInt 2016), Feb. 18-20 2016, Albuquerque, NM, USA.

9. T. Zhong, J. Kindem, J. Rochman, E. Miyazono, A. Ferrier, P. Goldner, and A. Faraon, “On-chip quantum storage in a rare-earth-doped photonic nanocavity,” SPIE Photonics West 2016, Feb. 15-18 2016, San Fransicsco CA, USA.

10. T. Zhong. J. Kindem, E. Miyazono, A. Faraon, “Nanophotonic quantum memory based on rare-earth-ions coupled to an optical resonator,” CLEO 2015, May 10-15 2015, San Jose CA, USA.

11. T. Zhong. J. Kindem, E. Miyazono, A. Faraon, “Towards detection of single rare-earth-ions in a nanophotonic resonator,” CLEO 2015, May 10-15 2015, San Jose CA, USA.

12. T. Zhong, J. Kingdem, E. Miyazono, A. Faraon, “Nanophotonic photon echo memory based on rare-earth doped crystals,” APS March Meeting 2015, Mar. 2-6 2015, San Antonio TX, USA.

13. T. Zhong, “Nanophotonic quantum memory based on rare earth doped crystals,” Southwest Quantum Information Technology (SQuInt 2015), Feb. 17-19 2015, Berkeley CA, USA.

14. T. Zhong, J. Kindem, E. Miyazono, A. Hartz, and A. Faraon, “Coupling of rare earth ions to a YSO nanophotonic resonator for efficient quantum memory,” SPIE Photonics West 2015, Feb. 9-13 2015, San Fransicsco CA, USA.

15. E. Miyazono, A. Hartz, T. Zhong, and A. Faraon, “Hybrid quantum nanophotonic devices for coupling to rare-earth ions,” SPIE Photonics West 2015, Feb. 9-13 2015, San Fransicsco CA, USA.

16. T. Zhong, E. Miyazono, A. Hartz, and A. Faraon, “Towards coupling of rare earth ions to a YSO nanophotonics resonator,” CLEO/QELS 2014, Jun. 8-13 2014, San Jose CA, USA.

17. T. Zhong, H. Zhou, R. D. Horansky, C. Lee, V. B. Verma, A. E. Lita, A. Restelli, J. C. Bienfang, R. P. Mirin, T. Gerrits, S. W. Nam, F. Marsili, M. D. Shaw, Z. Zhang, L. Wang, D. Englund, G. W. Wornell, J. H. Shapiro, and F. N. C. Wong, “High-dimensional quantum key distribution,” CLEO/QELS 2014, Jun. 8-13 2014, San Jose CA, USA.

18. Z. Xie, T. Zhong, X. Xu, J. Liang, Y-X. Gong, S. Shrestha, J. H. Shapiro, F. N. C. Wong, and C. W. Wong “Demonstration of high-dimensional frequency-bin entanglement,” CLEO/QELS 2014, Jun. 8-13 2014, San Jose CA, USA.

19. T. Zhong, and F. N. C. Wong, “Nonlocal cancellation of dispersion in Franson interferometry,” CLEO/QELS 2013, Jun. 9-14 2013, San Jose CA, USA.

20. Z. Xie, T. Zhong, X. Xu, D. Englund, J. H. Shapiro, F. N. C. Wong, and C. W. Wong, “Post-Selection-Free Mode-Locked Two-Photon State for High-Dimensional Hyperentanglement Generation,” CLEO/QELS 2013, Jun. 9-14 2013, San Jose CA, USA.

21. Z. Zhang, M. Tengner, T. Zhong, F. N. C. Wong and J. H. Shapiro, “Experimental demonstration of secure communication based on quantum illumination,” CLEO/QELS 2013, Jun. 9-14 2013, San Jose CA, USA.

22. T. Zhong, and F. N. C. Wong, “Franson interferometry with 99.6% visibility via dispersion engineering,” Conference on Quantum Communication, Measurement and Computing (QCMC) 2012, Jul. 31 2012, Vienna, Austria.

23. T. Zhong, F. N. C. Wong, A. Restelli and J. C. Bienfang, “Efficient single-spatial-mode PPKTP waveguide source for high dimensional entanglement-based QKD” CLEO/QELS 2012, May 6-11 2012, San Jose CA, USA.

24. M. Tengner, T. Zhong, F. N. C. Wong, J. H. Shapiro, “Two-way secure communication using Quantum Illumination” CLEO/QELS 2011, May 1 2011, Baltimore MD, USA.

25. T. Zhong, X. Hu, F. N. C. Wong, C. Herder, F. Najafi, K. K. Berggren, T. D. Roberts, P. Battle, “High quality photonic polarization entanglement distribution at 1.3-µm telecom wavelength,”Single Photon Workshop 2009, Nov. 2-5 2009, NIST, Boulder CO, USA.

26. T. Zhong, X. Hu, F. N. C. Wong, C. Herder, F. Najafi, K. K. Berggren, T. D. Roberts, P. Battle, “Towards high quality photonic polarization entanglement distribution at 1.3-µm telecom wavelength,” CLEO/QELS 2009, Jun. 2-4 2009, Baltimore MD, USA.

27. W. M. Zhu, X. M. Zhang, T. Zhong, and A. Q. Liu, “MEMS Optical tunneling structure for thermos-optic switching,” IEEE MEMS 2008, Jan. 13-17 2008, Tucson AZ, USA.

28. T. Zhong, X. M. Zhang, and A. Q. Liu. “Air spaced cylindrical prisms for fast thermal optical switching,” IEEE Transducers 2007, Jun. 10-14 2007, Lyon, France.

29. X. M. Zhang, Q. W. Zhao, T. Zhong, A. B. Yu, E. H. Khoo, C. Lu, and A. Q. Liu, “Variable nano-grating for tunable filters,” IEEE Transducers 2007, Jun. 10-14 2007, Lyon, France.

30. T. Zhong, X. M. Zhang, J. Li and A. Q. Liu. “Optical switch using thermo-optic effect of micromachined silicon hemispheres”. IEEE Optical MEMS 2006, Aug. 21-24 2006, MT, USA.

31. T. Zhong, J. Li, X. M. Zhang, C. Lu and A. Q. Liu. “Thermo-optic switch using micromachined silicon prism”. Asia-Pacific Conference of Transducers and Micro Nano Technology (APCOT), Jun. 26-28 2006, Singapore (Best Student Paper).

Book Chapter

 J. Li, and T. Zhong, “Chapter 3: MEMS Thermo-optic switches” Photonic MEMS Devices: Design, Fabrication and Control, CRC press.