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Full coherent frequency conversion between two microwave propagating modes
Baleegh Abdo, Katrina Sliwa, Flavius Schackert +5
We demonstrate full frequency conversion in the microwave domain using a Josephson three-wave mixing device pumped at the difference between the frequencies of its fundamental eige…
Demonstrating a Driven Reset Protocol of a Superconducting Qubit
K. Geerlings, Z. Leghtas, I. M. Pop +5
Qubit reset is crucial at the start of and during quantum information algorithms. We present the experimental demonstration of a practical method to force qubits into their ground…
Non-degenerate, three-wave mixing with the Josephson ring modulator
Baleegh Abdo, Archana Kamal, Michel H. Devoret
The Josephson ring modulator (JRM) is a device, based on Josephson tunnel junctions, capable of performing non-degenerate mixing in the microwave regime without losses. The generic…
Inelastic Microwave Photon Scattering off a Quantum Impurity in a Josephson-Junction Array
Moshe Goldstein, Michel H. Devoret, Manuel Houzet +1
Quantum fluctuations in an anharmonic superconducting circuit enable frequency conversion of individual incoming photons. This effect, linear in the photon beam intensity, leads to…
Hardware-efficient autonomous quantum error correction
Zaki Leghtas, Gerhard Kirchmair, Brian Vlastakis +3
We propose a new method to autonomously correct for errors of a logical qubit induced by energy relaxation. This scheme encodes the logical qubit as a multi-component superposition…
Gain, directionality and noise in microwave SQUID amplifiers: Input-output approach
Archana Kamal, John Clarke, Michel Devoret
We present a new theoretical framework to analyze microwave amplifiers based on the dc SQUID. Our analysis applies input-output theory generalized for Josephson junction devices bi…