60 citations · 155 across the 7 of their papers we have counts for
8 papers
Demonstrating a superconducting dual-rail cavity qubit with erasure-detected logical measurements
Kevin S. Chou, Tali Shemma, Heather McCarrick +31
A critical challenge in developing scalable error-corrected quantum systems is the accumulation of errors while performing operations and measurements. One promising approach is to…
Observation of the Schmid-Bulgadaev dissipative quantum phase transition
Roman Kuzmin, Nitish Mehta, Nicholas Grabon +4
Although quantum mechanics applies to many macroscopic superconducting devices, one basic prediction remained controversial for decades. Namely, a Josephson junction connected to a…
Theory of strong down-conversion in multi-mode cavity and circuit QED
Nitish Mehta, Cristiano Ciuti, Roman Kuzmin +1
We revisit the superstrong coupling regime of multi-mode cavity quantum electrodynamics (QED), defined to occur when the frequency of vacuum Rabi oscillations between the qubit and…
Tuning the inductance of Josephson junction arrays without SQUIDs
Roman Kuzmin, Nitish Mehta, Nicholas Grabon +1
It is customary to use arrays of superconducting quantum interference devices (SQUIDs) for implementing magnetic field-tunable inductors. Here, we demonstrate an equivalent tunabil…
Down-conversion of a single photon as a probe of many-body localization
Nitish Mehta, Roman Kuzmin, Cristiano Ciuti +1
Decay of a particle into more particles is a ubiquitous phenomenon to interacting quantum systems, taking place in colliders, nuclear reactors, or solids. In a non-linear medium, e…
Inelastic scattering of a photon by a quantum phase-slip
Roman Kuzmin, Nicholas Grabon, Nitish Mehta +5
Spontaneous decay of a single photon is a notoriously inefficient process in nature irrespective of the frequency range. We report that a quantum phase-slip fluctuation in high-imp…
Superstrong coupling in circuit quantum electrodynamics
Roman Kuzmin, Nitish Mehta, Nicholas Grabon +2
Vacuum fluctuations fundamentally affect an atom by inducing a finite excited state lifetime along with a Lamb shift of its transition frequency. Here we report the reverse effect:…
Quantum electrodynamics of a superconductor-insulator phase transition
Roman Kuzmin, Raymond Mencia, Nicholas Grabon +3
A chain of Josephson junctions implements one of the simplest many-body models undergoing a superconductor-insulator (SI) quantum phase transition between states with zero and infi…