## WHO WE ARE

Spin Quantum Computing Laboratory was established in September 2017 and sponsored by the Department of Physics at Southern University of Science and Technology (SUSTech, 南方科技大学), Shenzhen Institute for Quantum Science and Engineering (SIQSE, 深圳市量子科学与工程研究院), and Peng Cheng Laboratory (鹏城实验室). We conduct research on spin-based quantum technologies and the applications in quantum computing, with the experimental platforms including nuclear magnetic resonance (NMR) and optically detected magnetic resonance (ODMR).

Although the team is young (all five faculty members were born after 1985), but it is very creative and productive. The team has published over 100 papers in quantum computing, including over 20 papers in Nature Physics, Physical Review Letters, Physical Review X, and npj Quantum Information. The team hosts grants for Thousand Talents Plan for Young Professional (青年千人计划), two General Programs (面上项目) and two Youth Programs (青年项目) of National Natural Science Foundation of China.

In our laboratory, there are many activities in daily life. Group eating, group singing, and group mountain-climbing are just the basic, and we are exploring more (escape room on the way!). If you wish to enjoy the quantum life to be a postdoc, graduate student or research assistant, welcome to join this harmonic family!

## MEMBERS

## Dawei Lu

## Associate Professor

**Research Interests:**

1. Quantum information processing in nuclear and electron spin magnetic resonance systems.

2. Development of spin control techniques to achieve high-fidelity coherent control.

3. Benchmarks in large-scale systems.

4. Quantum simulation towards large-scale quantum systems.

5. Experimental realization of adiabatic quantum computing model.

6. Quantum state tomography and process tomography.

Email: [email protected]

## Jun Li

## Associate Professor

**Research Interests：**

1. Quantum system control,

2. quantum computation,

3. quantum thermalization,

4. spin dynamics,

5. nuclear magnetic resonance experiments

Email: [email protected]

## Tao Xin

## Assistant Professor

**Research Interests:**

1. Spin-based quantum computing, algorithm, and simulation,

2. Efficient quantum state tomography and quantum entanglement detection,

3. R & D for Benchtop NMR

Email: [email protected]

## Xinfang Nie

## Post-Doctoral Fellow

Email: [email protected]

## Amandeep Singh

## Post-Doctoral Fellow

Email: [email protected]

## Yu Tian

## Ph.D. Student

Email: [email protected]

## Xinyue Long

## Ph.D. Student

Email: [email protected]

## Chudan Qiu

## Graduate Student

Email: [email protected]

## Zidong Lin

## Graduate Student

Email: [email protected]

## Chao Wei

## Graduate Student

Email: [email protected]

## Xiuzhu Zhao

## Research Assistant

Email: [email protected]

## Alumni

## Shimin Zhang

## Research Assistant

Email: [email protected]

## Ze Zhang

## Former Graduate Student

Email: [email protected]

## RESEARCH

## Quantum Control

## NMR

## Quantum Simulation

## Spin Control in NV System

We pay attention to robust control in NV system, such like optimal control theory, geometric quantum control and control with dynamic decoupling.

## Benchtop NMR for quantum education

## PUBLICATIONS

**Preprints**

*(*: equal contributions; †: corresponding author)*

- Y. C. Li*, T. Xin*, C. D. Qiu, K. R. Li, G. Q. Liu, J. Li, Y. D. Wan†, and
**D.W. Lu†**,*Dynamical-Invariantbased Holonomic Quantum Gates: Theory and Experiment*, arXiv:2003.09848 (2020). - T. Xin*, Y. S. Li*, Y. A. Fan, X. R. Zhu, Y. J. Zhang, X. F. Nie, J. Li†, Q. H. Liu†, and
**D.W. Lu†**,*Experimental Detection of the Quantum Phases of a Three-Dimensional Topological Insulator on a Spin Quantum Simulator*, arXiv:2001.05122 (2020). - Y. M. Song*, Y. Tian*, Z. Y. Hu, F. F. Zhou, T. T. Xing,
**D.W. Lu**, B. Chen†, Y. Wang, N. Y. Xu†, and J. F. Du†,*Pulse-width-induced polarization enhancement of optically-pumped N-V electron spin in diamond*, arXiv:1912.06284 (2019).

### Refereed Papers

*(*: equal contributions; †: corresponding author)*

- X. F. Nie*, B. B. Wei*, X. Chen, Z. Zhang, X. Z. Zhao, C. D. Qiu, Y. Tian, Y. L. Ji, X. Tao†,
**D.W. Lu†**, and J. Li†,*Experimental Observation of Equilibrium and Dynamical Quantum Phase Transitions via Out-of-Time-Ordered Correlators*,**Phys. Rev. Lett. 124**, 250601 (2020). arXiv - T. Xin, X. F. Nie, X. Y. Kong,
**D.W. Lu†**, and J. Li†, Quantum state tomography via a variational hybrid quantum-classical method,**Phys. Rev. Applied 13**, 024013 (2020). arXiv - T. Xin, S. J. Wei, J. L. Cui, J. X. Xiao, I. Arrazola, L. Lamata, X. Y. Kong,
**D.W. Lu†**, E. Solano, and G. L. Long†, Quantum algorithm for solving linear differential equations: Theory and experiment,**Phys. Rev. A 101**, 032307 (2020). arXiv - T. Xin, S. R. Lu, N. P. Cao, G. Anikeeva,
**D.W. Lu**, J. Li†, G. L. Long, and B. Zeng†,*Local-measurementbased**quantum state tomography via neural networks*, accepted by**npj Quantum Information**(2019). arXiv. - Y. Wang, W. T. Ji, Z. H. Chai, Y. H. Guo, M. Q. Wang, X. Y. Ye, P. Yu, L. Zhang, X. Qin, P. F. Wang, F. Z. Shi, X. Rong,
**D.W. Lu**†, X. J. Liuy, and J. F. Du†,*Experimental observation of dynamical bulk-surface correspondence**for topological phases*, accepted by**Phys. Rev. A**(2019). arXiv - K. R. Li, Y. N. Li, M. X. Han, S. R. Lu, J. Zhou, D. Ruan, G. L. Long, Y. D. Wan†,
**D.W. Lu**†, B. Zeng†, and R. Laflamme,*Quantum Spacetime on a Quantum Simulator*,**Communications Physics****2**, 122 (2019). arXiv - J. Li†, Z. H. Luo, T. Xin, H. Y. Wang, D. Kribs,
**D. W. Lu**†, B. Zeng†, and R. Laflamme,*Experimental Im- plementation of Efficient Quantum Pseudorandomness on a 12-spin System*,**Phys. Rev. Lett. 123**, 030502 (2019). arXiv - W. Q. Zheng, H. Y. Wang, T. Xin, X. F. Nie†,
**D. W. Lu**†, and J. Li†,*Optimal Bounds on State Transfer Under Quantum Channels with Application to Spin System Engineering*,**Phys. Rev. A 100**, 022313 (2019). arXiv - Z. H. Luo, Y. Z. You, J. Li, C. M. Jian,
**D. W. Lu**†, C. K. Xu, B. Zeng†, and R. Laflamme,*Observing Fermion Pair Instability of the Sachdev-Ye-Kitaev Model on a Quantum Spin Simulator*,**npj Quantum Informa-**, 7 (2019). arXiv.

tion 5 - K. R. Li∗, M. X. Han∗, D. X. Qu, Z. C. Huang, G. L. Long, Y. D. Wan†,
**D.W.Lu**†, B. Zeng, and R. Laflamme,*Measuring Holographic Entanglement Entropy on a Quantum Simulator*,**npj Quantum Information 5**, 30 (2019). arXiv. - G. R. Feng, F. Cho, H. Katiyar, J. Li,
**D. W. Lu**, J. Baugh†, and R. Laflamme†,*Closed-Loop Quantum Opti- mal Control in a Solid-State Two-Qubit System*,**Phys. Rev. A 98**, 052341 (2018). arXiv. - S. R. Lu∗, S. L. Huang∗, K. R. Li, J. Li†, J. X. Chen,
**D.W.Lu**†, Z. F. Ji, Y. Shen, D. L. Zhou, and B. Zeng,*A Separability-Entanglement Classifier via Machine Learning*,**Phys. Rev. A 98**, 012315 (2018). arXiv. **D. W. Lu**†,*Speeding up the “quantum” mountain climb*,**Front. Phys. 13**, 130313 (2018).- T. Xin, S. L. Huang, S. R. Lu, K. R. Li, Z. H. Luo, Z. Q. Yin, J. Li†,
**D.W.L**u†, G. L. Long†, B. Zeng,*NM- RCloudQ: A Quantum Cloud Experience on a Nuclear Magnetic Resonance Quantum Computer*,**Sci. Bull. 63**, 17 (2018). arXiv.

**D. W. Lu**∗†, K. R. Li∗, J. Li∗, H. Katiyar, A. J. Park, G. R. Feng, T. Xin, H. Li, G. L. Long, A. Brodutch, J. Baugh, B. Zeng†, and R. Laflamme,*Enhancing quantum control by bootstrapping a quantum processor of 12 qubits*,**npj Quantum Information 3**, 45 (2017). arXiv.- J. Li†, S. L. Huang†, Z. H. Luo, K. R. Li,
**D. W. Lu**, and B. Zeng†,*Optimal design of measurement settings for quantum-state-tomography experiments*,**Phys. Rev. A 96**, 032307 (2017). arXiv. - K. R. Li, Y. D. Wan, L. Y. Hung, T. Lan, G. L. Long,
**D. W. Lu**†, B. Zeng, and R. Laflamme,*Experimen- tal Identification of Non-Abelian Topological Orders on a Quantum Simulator*,**Phys. Rev. Lett. 118**, 080502 (2017). arXiv - K. R. Li, G. F. Long, H. Katiyar, T. Xin, G. R. Feng,
**D. W. Lu**†, and R. Laflamme,*Experimentally superpos- ing two pure states with partial prior knowledge*,**Phys. Rev. A 95**, 022334 (2017). arXiv - H. Katiyar†, A. Brodutch†,
**D. W. Lu**†, and R. Laflamme†,*Experimental violation of the LeggettĺCGarg in- equality in a three-level system*,**New J. Phys. 19**, 023033 (2017). arXiv - T. Xin∗,
**D. W. Lu**∗, J. Klassen∗, N. K. Yu†, Z. F. Ji, J. X. Chen, X. Ma, G. L. Long, B. Zeng†, and R. Laflamme,*Quantum state tomography via reduced density matrices*,**Phys. Rev. Lett. 118**, 020401 (2017). arXiv - G. R. Feng, B. Buonacorsi, J. J. Wallman, F. H. Cho, D. Park, T. Xin,
**D. W. Lu**, J. Baugh, and R. Laflamme,*Estimating the coherence of noise in quantum control of a solid-state qubit*,**Phys. Rev. Lett. 117**, 260501 (2016). arXiv - X. Rong,
**D. W. Lu**, X. Kong, J. P. Geng, Y. Wang, F. Z. Shi, C. K. Duan, and J. F. Du†,*Harnessing the pow- er of quantum systems based on spin magnetic resonance: from ensembles to single particles*, invited review article,**Advances in Physics: X 2**, 125 (2016). - H. Y. Wang, W. Q. Zheng, N. K. Yu, K. R. Li,
**D.W.Lu**, T. Xin, C. Li, Z. F. Ji, D. Kribs, B. Zeng†, X. H. Peng†, and J. F. Du,*Quantum state and process tomography via adaptive measurements*,**Sci. China Phys. Mech. Astron. 59**, 100313 (2016). arXiv - J. Li,
**D. W. Lu**, Z. H. Luo, R. Laflamme, X. H. Peng†, and J. F. Du†,*Approximation of reachable set for co- herently controlled open quantum systems: application to quantum state engineering*,**Phys. Rev. A 94**, 012312 (2016). arXiv **D. W. Lu**∗, T. Xin∗, N. K. Yu∗, Z. F. Ji, J. X. Chen, G. L. Long, J. Baugh, X. H. Peng, B. Zeng†, and R. Laflamme,*Tomography is necessary for universal entanglement detection with single-copy observables*,**Phys. Rev. Lett. 116**, 230501 (2016). arXiv- A. J. Park†, E. McKay,
**D. W. Lu**†, and R. Laflamme,*Simulation of anyonic statistics and its topological path independence using a 7-qubit quantum simulator*,**New J. Phys. 18**, 043043 (2016). arXiv **D. W. Lu**†, J. Biamonte, J. Li, H. Li, T. Johnson, V. Bergholm, M. Faccin, Z. Zimbora ́s, R. Laflamme, J. Baugh, and S. Lloyd,*Chiral quantum walks*,**Phys. Rev. A 93**, 042302 (2016). arXiv- X. Ma, T. Jackson, H. Zhou, J. X. Chen,
**D. W. Lu**, M. D. Mazurek, K. A. G. Fisher, X. H. Peng, D. Kribs, K. J. Resch, Z. F. Ji, B. Zeng†, and R. Laflamme,*Pure-state tomography with the expectation value of Pauli operators*,**Phys. Rev. A 93**, 032140 (2016). arXiv **D. W. Lu**, H. Li, D. Trottier, J. Li, A. Brodutch, A. P. Krismanich, A. Ghavami, G. I. Dmitrienko, G. Long, J. Baugh, and R. Laflamme†,*Experimental estimation of average fidelity of a Clifford gate on a 7-qubit quan- tum processor*,**Phys. Rev. Lett. 114**, 140505 (2015). arXiv- Z. K. Li, H. Zhou, C. Y. Ju, H. W. Chen, W. Q. Zheng,
**D.W.Lu**, X. Rong, C. K. Duan, X. H. Peng†, and J. F. Du†,*Experimental realization of a compressed quantum simulation of a 32-spin Ising chain*,**Phys. Rev. Lett. 112**, 220501 (2014). **D. W. Lu**, A. Brodutch†, J. Li, H. Li, and R. Laflamme†,*Experimental realization of post-selected weak mea- surements on an NMR quantum processor*,**New J. Phys. 16**, 053015 (2014). arXiv**D.W.Lu**, B. R. Xu, N. Y. Xu, Z. K. Li, H. W. Chen, X. H. Peng, R. X. Xu, and J. F. Du†,*Quantumchem- istry simulation on quantum computers: theories and experiments*,**Phys. Chem. Chem. Phys. Perspective 14**, 9411 (2012).**D.W.Lu**, N. Y. Xu, B. R. Xu, Z. K. Li, H. W. Chen, X. H. Peng, R. X. Xu, and J. F. Du†,*Experimentals- tudy of quantum simulation for quantum chemistry with a nuclear magnetic resonance simulator*,**Phil. Trans. R. Soc. A 370**, 4734 (2012).- N. Y. Xu, J. Zhu,
**D. W. Lu**, X. Y. Zhou, X. H. Peng†, and J. F. Du†,*Quantum factorization of 143 on a dipolar-coupling NMR system*,**Phys. Rev. Lett. 108**, 130501 (2012). arXiv

- Z. K. Li∗, M. H. Yung∗, H. W. Chen,
**D. W. Lu**, J. D. Whitfield, X. H. Peng, A. Aspuru-Guzik, and J. F. Du†,*Solving quantum ground-state problems with nuclear magnetic resonance*,**Sci. Rep. 1**, 88 (2011). arXiv **D. W. Lu**, N. Y. Xu, R. X. Xu, H. W. Chen, J. B. Gong, X. H. Peng, and J. F. Du†,*Simulation of chemical isomerization reaction dynamics on a NMR quantum simulator*,**Phys. Rev. Lett. 107**, 020501 (2011). arXiv- H. W. Chen,
**D. W. Lu**, B. Chong, G. Qin, X. Y. Zhou, X. H. Peng†, and J. F. Du†,*Experimental demonstra- tion of probabilistic quantum cloning*,**Phys. Rev. Lett. 106**, 180404 (2011). arXiv **D. W. Lu**, J. Zhu, P. Zhou, X. H. Peng, Y. H. Yu, S. M. Zhang, Q. Chen, and J. F. Du†,*Experimental imple- mentation of a quantum random-walk search algorithm using strongly dipolar coupled spins*,**Phys. Rev. A 81**, 022308 (2010).- J. F. Du†, N. Y. Xu, X. H. Peng, P. F. Wang, S. F. Wu, and
**D. W. Lu**,*NMR implementation of a molecular hydrogen quantum simulation with adiabatic state preparation*,**Phys. Rev. Lett. 104**, 030502 (2010). arXiv - C. L. Ren,
**D. W. Lu**, X. H. Peng, M. J. Shi, and J. F. Du†,*Experimentally simulating the violation of Bell-type inequalities for generalized GHZ states*,**Phys. Lett. A 373**, 46, 4222-4226 (2009).

### Book Chapters

**D. W. Lu**, A. Brodutch, J. Park, H. Katiyar, T. Jochym-O’Connor, and R. Laflamme,*NMR quantum infor- mation processing, Electron Spin Resonance (ESR) Based Quantum Computing*(Springer Publishing, 2016). arXiv; order the book- J. F. Du, C. Lei, G. Qin,
**D. W. Lu**, and X. H. Peng,*Search via quantum walk, Search Algorithms and Ap- plications*(InTech Publishing, 2011). PDF; order the book

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