Zobrazeno 1 - 10
of 70
pro vyhledávání: '"Hope, Joseph J"'
We develop a new approach for efficient and scalable simulations of measurement and control of quantum systems built upon existing phase-space methods, namely the Truncated Wigner Approximation (TWA). We benchmark against existing particle-filter met
Externí odkaz:
http://arxiv.org/abs/2408.17092
Autor:
Ben-Aïcha, Yosri, Mehdi, Zain, Freier, Christian, Szigeti, Stuart S., Wigley, Paul B., Conlon, Lorcán O., Husband, Ryan, Legge, Samuel, Eagle, Rhys H., Hope, Joseph J., Robins, Nicholas P., Close, John D., Hardman, Kyle S., Haine, Simon A., Thomas, Ryan J.
We demonstrate an atom interferometer measurement protocol compatible with operation on a dynamic platform. Our method employs two open interferometers, derived from the same atomic source, with different interrogation times to eliminate initial velo
Externí odkaz:
http://arxiv.org/abs/2405.00400
Autor:
Gardner, James W., Gefen, Tuvia, Haine, Simon A., Hope, Joseph J., Preskill, John, Chen, Yanbei, McCuller, Lee
Although measuring the deterministic waveform of a weak classical force is a well-studied problem, estimating a random waveform, such as the spectral density of a stochastic signal field, is much less well-understood despite it being a widespread tas
Externí odkaz:
http://arxiv.org/abs/2404.13867
Publikováno v:
PRX Quantum 5, 030303 (2024)
The ability of quantum states to be in superposition is one of the key features that sets them apart from the classical world. This `coherence' is rigorously quantified by resource theories, which aim to understand how such properties may be exploite
Externí odkaz:
http://arxiv.org/abs/2401.16020
Publikováno v:
Phys. Rev. A 108, 043722 (2023)
We introduce a new spin-squeezing technique that is a hybrid of two well established spin-squeezing techniques, quantum nondemolition measurement (QND) and one-axis twisting (OAT). This hybrid method aims to improve spin-squeezing over what is curren
Externí odkaz:
http://arxiv.org/abs/2308.07693
Publikováno v:
Phys. Rev. Lett. 132, 130801. Published 28 March 2024
Sensing a classical signal using a linear quantum device is a pervasive application of quantum-enhanced measurement. The fundamental precision limits of linear waveform estimation, however, are not fully understood. In certain cases, there is an unex
Externí odkaz:
http://arxiv.org/abs/2308.06253
We investigate the fundamental viability of cooling ultracold atomic gases with quantum feedback control. Our study shows that the trade-off between the resolution and destructiveness of optical imaging techniques imposes constraints on the efficacy
Externí odkaz:
http://arxiv.org/abs/2306.09846
Publikováno v:
Physical Review Letters 130, 240203 (2023)
We propose relativistic tests of quantum gravity using the gravitational self-interaction of photons in a cavity. We demonstrate that this interaction results in a number of quantum gravitational signatures in the quantum state of the light that cann
Externí odkaz:
http://arxiv.org/abs/2210.02803
Autor:
Goh, Matthew L., Mehdi, Zain, Taylor, Richard L., Thomas, Ryan J., Bradley, Ashton S., Hush, Michael R., Hope, Joseph J., Szigeti, Stuart S.
Degenerate quantum gases are instrumental in advancing many-body quantum physics and underpin emerging precision sensing technologies. All state-of-the-art experiments use evaporative cooling to achieve the ultracold temperatures needed for quantum d
Externí odkaz:
http://arxiv.org/abs/2206.05069
Publikováno v:
Phys. Rev. Res. 5, 013184 (2023)
We present a microscopic open quantum systems theory of thermally-damped vortex motion in oblate atomic superfluids that includes previously neglected energy-damping interactions between superfluid and thermal atoms. This mechanism couples strongly t
Externí odkaz:
http://arxiv.org/abs/2205.04065