24 citations · 32 across the 11 of their papers we have counts for
9 papers · 1 filter
Ultra-Precise Quantum Projective Designs in Constant Depth
Qingyue Zhang, Junjie Chen, Zhou You +1
Random quantum objects are powerful resources for quantum information processing, yet exact Haar randomness is costly and typically unnecessary. We introduce an explicit sparse com…
Constant-depth adaptive preparation of Dicke and symmetric states
Rui Luo, Junjie Chen, Xiongfeng Ma
Efficient preparation of Dicke states and, more generally, permutation-symmetric states is important for quantum metrology, quantum networking, and collective quantum information p…
Complexity-driven transitions in quantum observation
Zhenyu Du, Siyuan Cheng, Han Ye +3
Observing the physical world is a foundational pursuit in science. In the quantum realm, however, observation necessitates a fundamental quantum-to-classical conversion: destructiv…
Bypassing the protection-sensitivity incompatibility in quantum-error-corrected metrology via asymmetric codes
Junjie Chen, Rui Luo, Zhenyu Du +3
Quantum metrology surpasses the classical precision limit by encoding signals in a probe state such that signal contributions are indistinguishable and their phases accumulate cohe…
Resource analysis of Shor's elliptic curve algorithm with an improved quantum adder on a two-dimensional lattice
Quan Gu, Han Ye, Junjie Chen +1
Quantum computers have the potential to break classical cryptographic systems by efficiently solving problems such as the elliptic curve discrete logarithm problem using Shor's alg…
State complexity and phase identification in adaptive quantum circuits
Guoding Liu, Junjie Chen, Xiongfeng Ma
Adaptive quantum circuits, leveraging measurements and classical feedback, significantly expand the landscape of realizable quantum states compared to their non-adaptive counterpar…
Quantum subspace verification for error correction codes
Junjie Chen, Pei Zeng, Qi Zhao +2
Benchmarking the performance of quantum error correction codes in physical systems is crucial for achieving fault-tolerant quantum computing. Current methodologies, such as (shadow…
Magic of quantum hypergraph states
Junjie Chen, Yuxuan Yan, You Zhou
Magic, or nonstabilizerness, characterizes the deviation of a quantum state from the set of stabilizer states and plays a fundamental role from quantum state complexity to universa…
Limitations of Noisy Quantum Devices in Computational and Entangling Power
Yuxuan Yan, Zhenyu Du, Junjie Chen +1
Finding solid and practical quantum advantages via noisy quantum devices without error correction is a critical but challenging problem. Conversely, comprehending the fundamental l…