42 citations · 189 across the 21 of their papers we have counts for
21 papers
Parametrically induced strong coupling between a superconducting quantum circuit and a solid-state spin ensemble
Alejandro E. Baptista, Jinwoong Kim, Sonia Rani +2
Efficient quantum state transfer between superconducting circuits and solid-state spins would unlock high-coherence quantum memories for superconducting quantum processors. We demo…
Autonomous stabilization of remote entanglement in a cascaded quantum network
Abdullah Irfan, Kaushik Singirikonda, Mingxing Yao +5
Remote entanglement between widely separated qubits is a fundamental quantum phenomenon and a critical resource for quantum information applications. Generating entanglement betwee…
The waves-in-space Purcell effect for superconducting qubits
Param Patel, Mingkang Xia, Chao Zhou +5
Quantum information processing, especially with quantum error correction, requires both long-lived qubits and fast, quantum non-demolition readout. In superconducting circuits this…
High dynamic-range quantum sensing of magnons and their dynamics using a superconducting qubit
Sonia Rani, Xi Cao, Alejandro E. Baptista +2
Magnons can endow quantum devices with new functionalities. Assessing their potential requires precise characterization of magnon properties. Here, we use a superconducting qubit t…
A high-efficiency plug-and-play superconducting qubit network
Michael Mollenhauer, Abdullah Irfan, Xi Cao +2
Modular architectures are a promising approach to scale quantum devices to the point of fault tolerance and utility. Modularity is particularly appealing for superconducting qubits…
MindSpore Quantum: A User-Friendly, High-Performance, and AI-Compatible Quantum Computing Framework
Xusheng Xu, Jiangyu Cui, Zidong Cui +36
We introduce MindSpore Quantum, a pioneering hybrid quantum-classical framework with a primary focus on the design and implementation of noisy intermediate-scale quantum (NISQ) alg…
Engineering a multi-level bath for transmons with three-wave mixing and parametric drives
Xi Cao, Maria Mucci, Gangqiang Liu +2
A quantum system with a tunable bath temperature provides an additional degree of freedom for quantum simulators. Such a system can be realized by parametrically modulating the cou…
Parametrically controlled chiral interface for superconducting quantum devices
Xi Cao, Abdullah Irfan, Michael Mollenhauer +2
Nonreciprocal microwave routing plays a crucial role for measuring quantum circuits, and allows for realizing cascaded quantum systems for generating and stabilizing entanglement b…
Quantum Optimal Control Theory for the Shaping of Flying Qubits
Xue Dong, Xi Cao, Wen-Long Li +3
The control of flying qubits carried by itinerant photons is ubiquitous in quantum networks. Beside their logical states, the shape of flying qubits must also be tailored for high-…
Loss resilience of driven-dissipative remote entanglement in chiral waveguide quantum electrodynamics
Abdullah Irfan, Mingxing Yao, Andrew Lingenfelter +3
Establishing limits of entanglement in open quantum systems is a problem of fundamental interest, with strong implications for applications in quantum information science. Here, we…
Robust Control of Single-Qubit Gates at the Quantum Speed Limit
Xi Cao, Jiangyu Cui, Man Hong Yung +1
Fastness and robustness are both critical in the implementation of high-fidelity gates for quantum computation, but in practice, a trade-off has to be made between them. In this pa…
Fast superconducting qubit control with sub-harmonic drives
Mingkang Xia, Chao Zhou, Chenxu Liu +8
Increasing the fidelity of single-qubit gates requires a combination of faster pulses and increased qubit coherence. However, with resonant qubit drive via a capacitively coupled p…
Experimental Quantum End-to-End Learning on a Superconducting Processor
Xiaoxuan Pan, Xi Cao, Weiting Wang +10
Machine learning can be substantially powered by a quantum computer owing to its huge Hilbert space and inherent quantum parallelism. In the pursuit of quantum advantages for machi…
Realizing all-to-all couplings among detachable quantum modules using a microwave quantum state router
Chao Zhou, Pinlei Lu, Matthieu Praquin +8
One of the primary challenges in realizing large-scale quantum processors is the realization of qubit couplings that balance interaction strength, connectivity, and mode confinemen…
Proposal for a continuous wave laser with linewidth well below the standard quantum limit
Chenxu Liu, Maria Mucci, Xi Cao +3
Due to their high coherence, a laser is a ubiquitous tool in science. We show that by engineering the coupling between the gain medium and the laser cavity as well as the laser cav…
Nearly quantum-limited Josephson-junction Frequency Comb synthesizer
Pinlei Lu, Saeed Khan, Tzu-Chiao Chien +5
While coherently-driven Kerr microcavities have rapidly matured as a platform for frequency comb formation, such microresonators generally possess weak Kerr coefficients; consequen…
End-to-End Quantum Machine Learning Implemented with Controlled Quantum Dynamics
Re-Bing Wu, Xi Cao, Pinchen Xie +1
Toward quantum machine learning deployed on imperfect near-term intermediate-scale quantum (NISQ) processors, the entire physical implementation of should include as less as possib…
Identification of Time-varying in situ Signals in Quantum Circuits
Xi Cao, Yu-xi Liu, Rebing Wu
The identification of time-varying \textit{in situ} signals is crucial for characterizing the dynamics of quantum processes occurring in highly isolated environments. Under certain…
Multiparametric Amplification and Qubit Measurement with a Kerr-free Josephson Ring Modulator
T. -C. Chien, O. Lanes, C. Liu +6
Josephson-junction based parametric amplifiers have become a ubiquitous component in superconducting quantum machines. Although parametric amplifiers regularly achieve near-quantum…
Learning to Calibrate Quantum Control Pulses by Iterative Deconvolution
Xi Cao, Bing Chu, Haijin Ding +3
In experimental control of quantum systems, the precision is often hindered by imperfect applied electronics that distort control pulses delivered to target quantum devices. To mit…
Josephson parametric converter saturation and higher order effects
G. Liu, T. -C. Chien, X. Cao +4
Microwave parametric amplifiers based on Josephson junctions have become a key component of many quantum information experiments. One key limitation which has not been well predict…