18 citations · 46 across the 6 of their papers we have counts for
6 papers
Simulating imperfect quantum optical circuits using unsymmetrized bases
John Steinmetz, Maike Ostmann, Alex Neville +2
Fault-tolerant photonic quantum computing requires the generation of large entangled resource states. The required size of these states makes it challenging to simulate the effects…
Time-Dependent Hamiltonian Reconstruction using Continuous Weak Measurements
Karthik Siva, Gerwin Koolstra, John Steinmetz +9
Reconstructing the Hamiltonian of a quantum system is an essential task for characterizing and certifying quantum processors and simulators. Existing techniques either rely on proj…
Optimal qubit circuits for quantum-enhanced telescopes
Robert Czupryniak, John Steinmetz, Paul G. Kwiat +1
We propose two optimal phase-estimation schemes that can be used for quantum-enhanced long-baseline interferometry. By using distributed entanglement, it is possible to eliminate t…
Continuous measurement of a qudit using dispersively coupled radiation
John Steinmetz, Debmalya Das, Irfan Siddiqi +1
We analyze the continuous monitoring of a qudit coupled to a cavity using both phase-preserving and phase-sensitive amplification. The quantum trajectories of the system are descri…
Enhanced on-chip frequency measurement using weak value amplification
John Steinmetz, Kevin Lyons, Meiting Song +2
We present an integrated design to precisely measure optical frequency using weak value amplification with a multi-mode interferometer. The technique involves introducing a weak pe…
Chaos in Continuously Monitored Quantum Systems: An Optimal Path Approach
Philippe Lewalle, John Steinmetz, Andrew N. Jordan
We predict that continuously monitored quantum dynamics can be chaotic. The optimal paths between past and future boundary conditions can diverge exponentially in time when there i…