6 papers · 1 filter
Bias-preserving cat-cat CNOT gate via vacuum-conditional beam-splitter
Yufeng Ye, Yufeng, Ye +6
Cat qubits can exhibit strong noise bias due to their exponentially enhanced bit-flip times and only polynomially reduced phase-flip times with increasing photon number, which make…
Variable Frequency Pulse Generation from Breathers in Josephson Transmission Lines
Gregory Cunningham, Yufeng Ye, Kaidong Peng +3
Single flux quantum technology has the potential to enhance readout and control of superconducting quantum systems due to their low energy consumption, high speed, and cryogenic op…
Interferometric Purcell suppression of spontaneous emission in a superconducting qubit
Alec Yen, Yufeng Ye, Kaidong Peng +8
In superconducting qubits, suppression of spontaneous emission is essential to achieve fast dispersive measurement and reset without sacrificing qubit lifetime. We show that resona…
Hardware-efficient quantum error correction via concatenated bosonic qubits
Harald Putterman, Kyungjoo Noh, Connor T. Hann +118
In order to solve problems of practical importance, quantum computers will likely need to incorporate quantum error correction, where a logical qubit is redundantly encoded in many…
Directional emission of a readout resonator for qubit measurement
Alec Yen, Yufeng Ye, Kaidong Peng +8
We propose and demonstrate transmission-based dispersive readout of a superconducting qubit using an all-pass resonator, which preferentially emits readout photons toward the outpu…
Near-ultrastrong nonlinear light-matter coupling in superconducting circuits
Yufeng Ye, Jeremy B. Kline, Alec Yen +9
The interaction between an atom and an electromagnetic mode of a resonator is of both fundamental interest and is ubiquitous in quantum technologies. Most prior work studies a line…