286 citations · 1.6k across the 25 of their papers we have counts for
25 papers
Surface code logical operations on a superconducting quantum processor
Weiping Lin, Shaojun Guo, Yuwei Ma +144
Fault-tolerant quantum computation requires logical operations that manipulate encoded information while preserving quantum error-correction protection. In planar surface-code arch…
Experimental Implementation of a Qubit-Efficient Variational Quantum Eigensolver with Analog Error Mitigation on a Superconducting Quantum Processor
Yuwei Ma, Weiting Wang, Xianghao Mu +8
We experimentally demonstrate a qubit-efficient variational quantum eigensolver (VQE) algorithm using a superconducting quantum processor, employing minimal quantum resources with…
Engineering the Nonlinearity of Bosonic Modes with a Multi-loop SQUID
Ziyue Hua, Yifang Xu, Weiting Wang +8
Engineering high-order nonlinearities while suppressing lower-order terms is crucial for quantum error correction and state control in bosonic systems, yet it remains an outstandin…
Dynamic compensation for pump-induced frequency shift in Kerr-cat qubit initialization
Yifang Xu, Ziyue Hua, Weiting Wang +12
The noise-biased Kerr-cat qubit is an attractive candidate for fault-tolerant quantum computation; however, its initialization faces challenges due to the squeezing pump-induced fr…
Unambiguous discrimination of general quantum operations
Weizhou Cai, Jing-Ning Zhang, Ziyue Hua +10
The discrimination of quantum operations has long been an intriguing challenge, with theoretical research significantly advancing our understanding of the quantum features in discr…
Tunable inductive coupler for high fidelity gates between fluxonium qubits
Helin Zhang, Chunyang Ding, D. K. Weiss +9
The fluxonium qubit is a promising candidate for quantum computation due to its long coherence times and large anharmonicity. We present a tunable coupler that realizes strong indu…
Protecting quantum entanglement between error-corrected logical qubits
Weizhou Cai, Xianghao Mu, Weiting Wang +11
Entanglement represents one of the most important conceptual advances in physics during the last century and is also one of the most essential resources in quantum information scie…
Experimental preparation of generalized cat states for itinerant microwave photons
Zenghui Bao, Zhiling Wang, Yukai Wu +11
Generalized cat states represent arbitrary superpositions of coherent states, which are of great importance in various quantum information processing protocols. Here we demonstrate…
Fast high-fidelity gates for galvanically-coupled fluxonium qubits using strong flux modulation
D. K. Weiss, Helin Zhang, Chunyang Ding +3
Long coherence times, large anharmonicity and robust charge-noise insensitivity render fluxonium qubits an interesting alternative to transmons. Recent experiments have demonstrate…
A flying Schrödinger cat in multipartite entangled states
Zhiling Wang, Zenghui Bao, Yukai Wu +11
Schrödinger's cat originates from the famous thought experiment querying the counterintuitive quantum superposition of macroscopic objects. As a natural extension, several "cats" (…
Experimental simulation of open quantum system dynamics via Trotterization
Jiaxiu Han, Weizhou Cai, Ling Hu +8
Digital quantum simulators provide a diversified tool for solving the evolution of quantum systems with complicated Hamiltonians and hold great potential for a wide range of applic…
Bosonic quantum error correction codes in superconducting quantum circuits
W. Cai, Y. Ma, W. Wang +2
Quantum information is vulnerable to environmental noise and experimental imperfections, hindering the reliability of practical quantum information processors. Therefore, quantum e…
High-efficiency arbitrary quantum operation on a high-dimensional quantum system
Weizhou Cai, Jiaxiu Han, Ling Hu +10
The ability to manipulate quantum systems lies at the heart of the development of quantum technology. The ultimate goal of quantum control is to realize arbitrary quantum operation…
Manipulating complex hybrid entanglement and testing multipartite Bell inequalities in a superconducting circuit
Yuwei Ma, Xiaoxuan Pan, Weizhou Cai +9
Quantum correlations in observables of multiple systems not only are of fundamental interest, but also play a key role in quantum information processing. As a signature of these co…
Experimental implementation of universal nonadiabatic geometric quantum gates in a superconducting circuit
Yuan Xu, Ziyue Hua, Tao Chen +9
Using geometric phases to realize noise-resilient quantum computing is an important method to enhance the control fidelity. In this work, we experimentally realize a universal nona…
Heisenberg limited single-mode quantum metrology
W. Wang, Y. Wu, Y. Ma +11
Two-mode interferometers, such as Michelson interferometer based on two spatial optical modes, lay the foundations for quantum metrology. Instead of exploring quantum entanglement…
Observation of topological magnon insulator states in a superconducting circuit
Weizhou Cai, Jiaxiu Han, Feng Mei +9
Searching topological states in artificial systems has recently become a rapidly growing field of research. Meanwhile, significant experimental progresses on observing topological…
Demonstration of Controlled-Phase Gates between Two Error-Correctable Photonic Qubits
Yuan Xu, Yuwei Ma, Weizhou Cai +11
To realize fault-tolerant quantum computing, it is necessary to store quantum information in logical qubits with error correction functions, realized by distributing a logical stat…
Quantum generative adversarial learning in a superconducting quantum circuit
Ling Hu, Shu-Hao Wu, Weizhou Cai +8
Generative adversarial learning is one of the most exciting recent breakthroughs in machine learning---a subfield of artificial intelligence that is currently driving a revolution…
Experimental repetitive quantum channel simulation
Ling Hu, Xianghao Mu, Weizhou Cai +6
Universal control of quantum systems is a major goal to be achieved for quantum information processing, which demands thorough understanding of fundamental quantum mechanics and pr…
Witnessing quantum resource conversion within deterministic quantum computation using one pure superconducting qubit
W. Wang, J. Han, B. Yadin +9
Deterministic quantum computation with one qubit (DQC1) is iconic in highlighting that exponential quantum speedup may be achieved with negligible entanglement. Its discovery catal…
Perfect quantum state transfer in a superconducting qubit chain with parametrically tunable couplings
X. Li, Y. Ma, J. Han +8
Faithfully transferring the quantum state is essential for quantum information processing. Here we demonstrate a fast (in 84 ns) and high-fidelity (99.2%) transfer of arbitrary qua…
Demonstration of quantum error correction and universal gate set on a binomial bosonic logical qubit
Ling Hu, Yuwei Ma, Weizhou Cai +10
Logical qubit encoding and quantum error correction (QEC) have been experimentally demonstrated in various physical systems with multiple physical qubits, however, logical operatio…
Simulating Molecular Spectroscopy with Circuit Quantum Electrodynamics
Ling Hu, YueChi Ma, Y. Xu +5
Spectroscopy is a crucial laboratory technique for understanding quantum systems through their interactions with electromagnetic radiation. Particularly, spectroscopy is capable of…