Yuxiang Yang Homepage

I am a quantum information theorist, currently an assistant professor at the University of Hong Kong.
From 2018 to 2021, I worked at ITP, ETH Zürich (Renato Renner's group) as a postdoc.
I obtained a PhD in Computer Science from the University of Hong Kong (2018; supervisor: Giulio Chiribella) and a Bachelor in Physics from Tsinghua University (2013).

Openings

I am looking for motivated PhD students.
Please contact me with your CV, publications (if any), transcript, and a brief statement of interest.

Postdoc positions are now available in my group at the University of Hong Kong.
The candidate should have research experience in quantum metrology, quantum information, or quantum computing.
Please email me your CV, a brief research statement, representative (preferably first-author) publications, and at least one academic reference.

News

[04/2024] New paper on NISQ + compression “Compression of quantum shallow-circuit states” . A problem that I have been pondering over for long time ~
[04/2024] Collaboration “Quantum-enhanced metrology with network states” with Zhen-Peng Xu and Benjamin Yadin accepted for publication in Physical Review Letters.
[04/2024] Two new papers of our group on quantum metrology “Heisenberg-Limited Quantum Metrology without Ancilla” and “Efficient Tensor Networks for Control-Enhanced Quantum Metrology” .
[11/2023] New paper of our group “Flexible Error Mitigation of Quantum Processes with Data Augmentation Empowered Neural Model” .
[09/2023] Awarded the 2023 NSFC Excellent Young Scientist Scheme (Hong Kong and Macau) a.k.a. 港澳优青 .
[09/2023] New member Zishen Li (Bsc SUSTech) joined as a PhD student at HKUCS. Welcome!
[06/2023] New paper "Quantum Uncertainty Principles for Measurements with Interventions." with Yunlong Xiao, Ximing Wang, Qing Liu, and Mile Gu published in Physical Review Letters .
[06/2022] New project (as the PI) on "Optimized Quantum Metrology with Noisy and Intermediate-Scale Quantum (NISQ) Techniques" funded by RGC of Hong Kong as a General Research Fund (GRF) project (amount: HK$ 793k).
[04/2022] New paper "Experimental super-Heisenberg quantum metrology with indefinite gate order." with Xiaobin Zhao, Giulio Chiribella, and the USTC experimental team led by Geng Chen and Chuan-Feng Li published in Nature Physics.
[02/2023] New paper Optimal Strategies of Quantum Metrology with a Strict Hierarchy with Qiushi Liu (PhD student from my group), Zihao Hu, and Haidong Yuan published in Physical Review Letters.

Select Publications [see Google Scholar for the Full List]

Optimal strategies of quantum metrology with a strict hierarchy.
Qiushi Liu, Zihao Hu, Haidong Yuan, Yuxiang Yang
Physical Review Letters 130, 070803 (2023).
Quantum metrology for non-Markovian processes.
Anian Altherr, Yuxiang Yang
Physical Review Letters 127, 060501 (2021).
Fundamental Energy Requirement of Reversible Quantum Operations.
Giulio Chiribella, Yuxiang Yang, Renato Renner
Physical Review X 11, 021014 (2021).
Optimal universal programming of unitary gates.
Yuxiang Yang, Renato Renner, Giulio Chiribella
Physical Review Letters 125, 210501 (2020; Editors' Suggestion).
Quantum metrology with indefinite causal order.
Xiaobin Zhao, Yuxiang Yang, Giulio Chiribella
Physical Review Letters 124, 190503 (2020).
Experimental demonstration published in Nature Physics (2023).
Memory effects in quantum metrology.
Yuxiang Yang
Physical Review Letters 123, 110501 (2019).
Attaining the ultimate precision limit in quantum state estimation.
Yuxiang Yang, Giulio Chiribella, Masahito Hayashi.
Communications in Mathematical Physics 368, 223-293 (2019).
Compression for quantum population coding.
Yuxiang Yang, Ge Bai, Giulio Chiribella, Masahito Hayashi.
IEEE Transactions on Information Theory 64, 4766-4783 (2018).
Optimal compression for identically prepared qubit states.
Yuxiang Yang, Giulio Chiribella, Masahito Hayashi
Physical Review Letters 117, 090502 (2016).
Quantum replication at the Heisenberg limit.
Giulio Chiribella, Yuxiang Yang, Andrew C.-C. Yao
Nature Communications 4, 2915 (2013).

On-going Projects

2024-26	Title: Quantum-enhanced Metrology. NSFC EYS (12322516) Amount: 2,000,000 CNY
2024-26	Title: Optimised Quantum Metrology with Noisy and Intermediate-Scale Quantum (NISQ) Techniques. GRF - RGC (HK) (17303923) Amount: 792,532 HKD
2023-25	Title: Multiparameter Non-Markovian Quantum Metrology: from Theory to Quantum Sensor Design. ECS - RGC (HK) (27310822) Amount: 738,110 HKD
2022-24	Title: Quantum resource lifting: quantum computing and metrology under the resource theory framework. Guangdong NSF (2022A1515010340) Amount: 100,000 CNY

Team

Current Members:

Zishen Li	PhD Student, 2023- (BSc SUSTech)
Manwen Liao	PhD Student, 2022- (BSc HUST)
Qiushi Liu	PhD Student, 2021- (MSc ETHZ, BSc PKU)

Alumini:

Anian Altherr	Master thesis at ETHZ, 2021 (--> PhD at ETHZ)
Qiushi Liu	Master thesis at ETHZ, 2021 (--> PhD at HKU)
Fereshte Mozafari	Visiting PhD Student at ETHZ, 2021 (--> PhD at EPFL)
Christian Bertoni	Master thesis at ETHZ, 2019; co-supervision with Joe Renes (--> PhD at FUB)

Professional Services

Committee Service in International Conferences:
International Conference on Quantum Communications, Networking, and Computing (PC)
Beyond IID in Information Theory (PC)
Hong Kong - Shenzhen Workshop on Quantum Information Science (PC)

Journal Reviews:
Communications in Mathematical Physics
Europhysics Letters
IEEE Transactions on Information Theory
New Journal of Physics
npj Quantum Information
Physical Review A
Physical Review Letters
Physical Review X
PRX Quantum
Quantum
Quantum Information and Computation
Quantum Information Processing
Scientific Reports

Conference Reviews:
Annual on Quantum Information Processing (QIP)
Beyond IID in information theory (BIID)
Conference on the Theory of Quantum Computation, Communication and Cryptography (TQC)
IEEE International Symposium on Information Theory (ISIT)
The international conference on Quantum Communication, Measurement and Computing (QCMC).

2023	NSFC Excellent Young Scientist Scheme (Hong Kong and Macau, 港澳优青)
2021	Journal of Physics A, Emerging Talents
2017	Microsoft Research Asia Fellowship

COMP 2121	Discrete Mathematics
COMP 3366	Quantum Algorithms and Computer Architecture
CCST 9077	The Quantum Revolution: From Secret Codes to Black Holes

Yuxiang Yang

Assistant Professor

Biography