10 papers
High-Precision Calibration Workflow Achieves Above CZ Gate Fidelity on a Scalable Superconducting Processor
Huili Zhang, Meiling Li, Shuang Yang +6
High-fidelity universal two-qubit gates are critical for building fault-tolerant quantum computers. In scalable superconducting processors, shortened coherence times introduce more…
Experimental demonstration of entanglement pumping with bosonic logical qubits
Jie Zhou, Chuanlong Ma, Yifang Xu +9
Entanglement is crucial for quantum networks and computation, yet maintaining high-fidelity entangled quantum states is hindered by decoherence and resource-intensive purification…
Principles of Optics in the Fock Space: Scalable Manipulation of Giant Quantum States
Yifang Xu, Yilong Zhou, Ziyue Hua +11
The manipulation of distinct degrees of freedom of photons plays a critical role in both classical and quantum information processing. While the principles of wave optics provide e…
Giant-atom quantum acoustodynamics in hybrid superconducting-phononic integrated circuits
Lintao Xiao, Bo Zhang, Yu Zeng +11
We demonstrate a giant atom by coupling a superconducting transmon qubit to a lithium niobate phononic waveguide at two points separated by about 600 acoustic wavelengths, with a p…
Circuit Quantum Acoustodynamics in a Scalable Phononic Integrated Circuit Architecture
Weiting Wang, Lintao Xiao, Bo Zhang +11
Previous demonstrations of quantum acoustic systems have been limited to isolated devices, with limited capability to route phonons and interconnect multi-port acoustic elements fo…
High-Fidelity Controlled-Phase Gate for Binomial Codes via Geometric Phase Engineering
Yifang Xu, Yilong Zhou, Lida Sun +12
High-fidelity two-logical-qubit gates are essential for realizing fault-tolerant quantum computation with bosonic codes, yet experimentally reported fidelities have rarely exceeded…