Zobrazeno 1 - 10
of 101
pro vyhledávání: '"Rimberg, A. J."'
Autor:
Thyagarajan, Bhargava, Kanhirathingal, Sisira, Brock, Benjamin L., Li, Juliang, Blencowe, Miles P., Rimberg, Alexander J.
Operating the cavity-embedded Cooper pair transistor (cCPT) in the Kerr bistable regime, we demonstrate single-shot resolution between two charge states that are $0.09e$ apart. The measurement is performed with 94$\%$ fidelity in a duration of 3 $\mu
Externí odkaz:
http://arxiv.org/abs/2301.00110
Autor:
Kanhirathingal, S., Thyagarajan, B., Brock, B. L., Li, Juliang, Jeffrey, E., Blencowe, M. P., Mutus, J. Y., Rimberg, A. J.
We successfully demonstrate low-frequency noise suppression in the resonant frequency fluctuations of a cavity-embedded Cooper pair transistor (cCPT) driven at single-photon occupancy. In particular, we report a reduction in the resonant frequency fl
Externí odkaz:
http://arxiv.org/abs/2202.04227
Autor:
Brock, B. L., Li, Juliang, Kanhirathingal, S., Thyagarajan, B., Blencowe, M. P., Rimberg, A. J.
We demonstrate fast and ultrasensitive charge detection with a cavity-embedded Cooper pair transistor (cCPT) via dispersive readout of its Josephson inductance. We report a minimum charge sensitivity of $14$ $\mu e/\sqrt{\mathrm{Hz}}$ with a detectio
Externí odkaz:
http://arxiv.org/abs/2102.05362
Using an operator scattering approach, we analyze the quantum dynamics of an ultrasensitive electrometer -- a Cooper pair transistor embedded in a quarter-wave microwave cavity (cCPT). While the cCPT is inherently a tunable, strongly nonlinear system
Externí odkaz:
http://arxiv.org/abs/2012.12313
Autor:
Brock, B. L., Li, Juliang, Kanhirathingal, S., Thyagarajan, B., Braasch Jr., William F., Blencowe, M. P., Rimberg, A. J.
Publikováno v:
Phys. Rev. Applied 15, 044009 (2021)
We introduce the cavity-embedded Cooper pair transistor (cCPT), a device which behaves as a highly nonlinear microwave cavity whose resonant frequency can be tuned both by charging a gate capacitor and by threading flux through a SQUID loop. We chara
Externí odkaz:
http://arxiv.org/abs/2011.06298
Publikováno v:
Phys. Rev. Applied 14, 054026 (2020)
We present a model for how frequency fluctuations comparable to the total cavity linewidth may arise in tunable and nonlinear microwave cavities, and how these fluctuations affect the measurement of scattering matrix elements. Applying this model to
Externí odkaz:
http://arxiv.org/abs/1906.11989
Publikováno v:
Phys. Rev. A 99, 053833 (2019)
We consider a model for an oscillatory, relativistic accelerating photodetector inside a cavity and show that the entangled photon pair production from the vacuum (Unruh effect) can be accurately described in the steady state by a non-degenerate para
Externí odkaz:
http://arxiv.org/abs/1811.10065
Publikováno v:
Phys. Rev. B 96, 104503 (2017)
We give a semiclassical analysis of the average photon number as well as photon number variance (Fano factor $F$) for a Josephson-junction (JJ) embedded microwave cavity system, where the JJ is subject to a fluctuating (i.e. noisy) bias voltage with
Externí odkaz:
http://arxiv.org/abs/1704.07476
Publikováno v:
Phys. Rev. A 100, 012124 (2019)
We extend the Wigner current vector field (Wigner current) construct to single bosonic mode quantum systems interacting with an environment. In terms of the Wigner function quasiprobability density and associated Wigner current, the open system quant
Externí odkaz:
http://arxiv.org/abs/1703.04844
Publikováno v:
Phys. Rev. E 91, 013307 (2015)
We present a sparse matrix permutation from graph theory that gives stable incomplete Lower-Upper (LU) preconditioners necessary for iterative solutions to the steady state density matrix for quantum optomechanical systems. This reordering is efficie
Externí odkaz:
http://arxiv.org/abs/1411.4356