6 papers
Quantum Enhanced Dark-Matter Search with Entangled Fock States in High-Quality Cavities
Benjamin Freiman, Xinyuan You, Andy C. Y. Li +5
We present a quantum-enhanced protocol for detecting wave-like dark matter using an array of entangled superconducting cavities initialized in an -photon Fock state. By dist…
Ultracoherent superconducting cavity-based multiqudit platform with error-resilient control
Taeyoon Kim, Tanay Roy, Xinyuan You +26
Realizing the promise of quantum computing requires simultaneously increasing Hilbert-space size and coherence times. While qubit-based architectures have long been the dominant pa…
Practical limitations of the switching theorem for adiabatic state preparation
Thomas D. Cohen, Andrew Li, Hyunwoo Oh +1
The viability of adiabatic quantum computation depends on the slow evolution of the Hamiltonian. The adiabatic switching theorem provides an asymptotic series for error estimates i…
Existence of a robust optimal control process for efficient measurements in a two-qubit system
Ricardo Rodriguez, Nam Nguyen, Elizabeth Behrman +2
The verification of quantum entanglement is essential for quality control in quantum communication. In this work, we propose an efficient protocol to directly verify the two-qubit…
Floquet-engineered fast SNAP gates in weakly coupled circuit-QED systems
Xinyuan You, Andy C. Y. Li, Tanay Roy +5
Superconducting cavities with high quality factors, coupled to a fixed-frequency transmon, provide a state-of-the-art platform for quantum information storage and manipulation. The…
Color code decoder with improved scaling for correcting circuit-level noise
Seok-Hyung Lee, Andrew Li, Stephen D. Bartlett
Two-dimensional color codes are a promising candidate for fault-tolerant quantum computing, as they have high encoding rates, transversal implementation of logical Clifford gates,…