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Coexistence of nonequilibrium density and equilibrium energy distribution of quasiparticles in a superconducting qubit
The density of quasiparticles typically observed in superconducting qubits exceeds the
value expected in equilibrium by many orders of magnitude. Can this out-of-equilibrium …
value expected in equilibrium by many orders of magnitude. Can this out-of-equilibrium …
Dynamically enhancing qubit-photon interactions with antisqueezing
The interaction strength of an oscillator to a qubit grows with the oscillator's vacuum field
fluctuations. The well-known degenerate parametric oscillator has revived interest in the …
fluctuations. The well-known degenerate parametric oscillator has revived interest in the …
Low-pass filter with ultrawide stopband for quantum computing applications
A new type of low-pass filter based on a leaky coaxial waveguide is presented. The filter has
minimal insertion loss in the passband, while at the same time, high attenuation in the …
minimal insertion loss in the passband, while at the same time, high attenuation in the …
Scalable cryoelectronics for superconducting qubit control and readout
Quantum computing promises an exponentially higher computational power than classical
computers; although all the building blocks have become available, certain constraints still …
computers; although all the building blocks have become available, certain constraints still …
[HTML][HTML] Impedance-matched coplanar-waveguide metal-powder low-pass filters for cryogenic applications
We developed impedance-matched metal-powder low-pass filters based on coplanar
waveguide design and characterized them at room temperature and 77.4 K. The coplanar …
waveguide design and characterized them at room temperature and 77.4 K. The coplanar …
Heralded and robust W-state generation for distant superconducting qubits with practical microwave pulse scattering
Z Guo, Z **e, Y Wang, Z Li, T Li - Applied Physics Letters, 2023 - pubs.aip.org
Nonlocal multipartite entanglement holds significant potential for both fundamental physics
and practical applications. We present a robust protocol for generating remote …
and practical applications. We present a robust protocol for generating remote …
[HTML][HTML] Absorptive filters for quantum circuits: Efficient fabrication and cryogenic power handling
We present an efficient fabrication method for absorptive microwave filters based on
Eccosorb CR-124. Filters are fabricated from readily available parts, and their cutoff …
Eccosorb CR-124. Filters are fabricated from readily available parts, and their cutoff …
Robust cryogenic matched low-pass coaxial filters for quantum computing applications
Electromagnetic noise is one of the main external factors decreasing superconducting qubit
coherence. Matched coaxial filters can prevent microwave and IR photons' negative …
coherence. Matched coaxial filters can prevent microwave and IR photons' negative …
Automated error correction in superdense coding, with implementation on superconducting quantum computer
Construction of a fault-tolerant quantum computer remains a challenging problem due to
unavoidable noise in quantum states and the fragility of quantum entanglement. However …
unavoidable noise in quantum states and the fragility of quantum entanglement. However …
The Fe micropowder low-pass coaxial filter tunable by magnetic field
In this paper, the behavior of the coaxial filter filled with carbonyl iron micropowder was
studied. Amplitude-frequency characteristics (AFC) and phase-frequency characteristics …
studied. Amplitude-frequency characteristics (AFC) and phase-frequency characteristics …