• [01/2025] New paper on NISQ + compression “Compression of quantum shallow-circuit states”
  published in PRL and accepted for oral presentation by QIP'25 .
• [01/2025] New paper with my PhD student Manwen (in collaboration with Yan Zhu and Giulio Chiribella from QICI)
  “Noise-Agnostic Quantum Error Mitigation with Data Augmented Neural Models” accepted for publication in npj Quantum Information.
• [12/2024] New paper with my PhD student Qiushi “Efficient Tensor Networks for Control-Enhanced Quantum Metrology” published in Quantum.
• [11/2024] New RGC/NSFC joint research scheme project (as the co-PI) on "Quantum sensors with optimized complexity for the NISQ era." funded by RGC of Hong Kong (amount: HK$ 1.2m).
• [10/2024] New PhD student Longyun Chen (BSc Nanjing U) and new postdocs Binke Xia (PhD Shanghai Jiao Tong) and Ming Ji (PhD Hiroshima) joined our group. Welcome!
• [09/2024] Invited review paper of our group (in collaboration with Prof. Haidong Yuan from CUHK) “Fully-Optimized Quantum Metrology: Framework, Tools, and Applications.” is now online.
• [06/2024] New project (as the PI) on "Energy-efficient optimal quantum metrology: fundamental limits, protocols, and indefinite causal orders." funded by RGC of Hong Kong as a General Research Fund (GRF 2024/25) project (amount: HK$ 910k).
• [04/2024] Collaboration “Quantum-enhanced metrology with network states” with Zhen-Peng Xu and Benjamin Yadin accepted for publication in Physical Review Letters.
• [09/2023] Awarded the 2023 NSFC Excellent Young Scientist Scheme (Hong Kong and Macau) a.k.a. 港澳优青 .

Select Publications [see Google Scholar for the Full List]

• Compression of quantum shallow-circuit states.
  Yuxiang Yang
  Physical Review Letters 134, 010603 (2025).
  
• Quantum-enhanced metrology with network states.
  Yuxiang Yang, Benjamin Yadin, Zhen-Peng Xu
  Physical Review Letters 132, 210801 (2024).
  
• Optimal strategies of quantum metrology with a strict hierarchy.
  Qiushi Liu, Zihao Hu, Haidong Yuan, Yuxiang Yang
  Physical Review Letters 130, 070803 (2023).
  See also the tutorial
• Quantum metrology for non-Markovian processes.
  Anian Altherr, Yuxiang Yang
  Physical Review Letters 127, 060501 (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).
  

Team

Current Members:

Ming Ji	Postdoc, 2024- (PhD Hiroshima)
Binke Xia	Postdoc, 2024- (PhD Shanghai Jiao Tong)
Qiushi Liu	PhD Student, 2021- (MSc ETHZ, BSc PKU)
Manwen Liao	PhD Student, 2022- (BSc HUST)
Zishen Li	PhD Student, 2023- (BSc SUSTech)
Longyun Chen	PhD Student, 2024- (BSc Nanjing)

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)

On-going Projects (as PI)

2025-28	Title: Quantum sensors with optimized complexity for the NISQ era. RGC/NSFC JRS (HK/mainland China) (N_HKU7107/24)    Amount: 1,209,740 HKD
2025-27	Title: Energy-efficient optimal quantum metrology: fundamental limits, protocols, and indefinite causal orders. GRF - RGC (HK) (17302724)    Amount: 910,742 HKD
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

Honors & Awards

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

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).

Teaching

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