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Strong suppression of the resistivity near the transition to superconductivity in narrow micro-bridges in external magnetic fields
Xiaofu Zhang, Adriana E. Lita, Konstantin Smirnov +5
We have investigated a series of superconducting bridges based on homogeneous amorphous WSi and MoSi films, with bridge widths w ranging from 2 um to 1000 um and film thicknesses d…
A kilopixel array of superconducting nanowire single-photon detectors
Emma E. Wollman, Varun B. Verma, Adriana E. Lita +4
We present a 1024-element imaging array of superconducting nanowire single photon detectors (SNSPDs) using a 32x32 row-column multiplexing architecture. Large arrays are desirable…
Tuning between photon-number and quadrature measurements with weak-field homodyne detection
G. S. Thekkadath, D. S. Phillips, J. F. F. Bulmer +10
Variable measurement operators enable the optimization of strategies for testing quantum properties and the preparation of a range of quantum states. Here, we experimentally implem…
State-independent quantum tomography of a single-photon state by photon-number-resolving measurements
Rajveer Nehra, Aye Win, Miller Eaton +6
The Wigner quasiprobability distribution of a narrowband single-photon state was reconstructed by quantum state tomography using photon-number-resolving measurements with transitio…
Quantum simulations with multiphoton Fock states
T. Sturges, T. McDermott, A. Buraczewski +9
Quantum simulations are becoming an essential tool for studying complex phenomena, e.g. quantum topology, quantum information transfer, and relativistic wave equations, beyond the…
Determining the depairing current in superconducting nanowire single-photon detectors
S. Frasca, B. Korzh, M. Colangelo +12
We estimate the depairing current of superconducting nanowire single photon detectors (SNSPDs) by studying the dependence of the nanowires kinetic inductance on their bias current.…