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Variational Joint Magnetometry and Gradiometry on Dipolar Spin Chains
Priyam Srivastava, Xin Jin, Junyu Liu +4
Estimating a uniform magnetic field B0 and its spatial gradient g on a dipolar-coupled spin chain calls for a multiparameter figure of merit. The GHZ state, optimal for single-para…
All-Dielectric Resonant Cavity Electro-Optic Transduction Between Microwave and Telecom
Mihir Khanna, Yang Hu, Thomas P. Purdy
We present a resonant electro-optic transducer for efficient conversion between microwave and telecom wavelength photons. Our platform employs a bulk lithium niobate crystal whose…
Visualizing Detection Efficiency in Optomechanical Scattering
Youssef Tawfik, Shan Hao, Thomas P. Purdy
Many optical measurement techniques, such as light scattering from wavelength-scale particles or detecting motion from a surface with an optical lever, encode information in a comp…
Quartz phononic crystal resonators for hybrid acoustic quantum memories
Yang Hu, Angad Gupta, Jacob Repicky +2
Circuit quantum acoustodynamics systems have emerged as a promising platform for quantum information by coupling superconducting qubits to mechanical resonators, with their long-li…
A Spin-Based Pathway to Testing the Quantum Nature of Gravity
Sougato Bose, Anupam Mazumdar, Roger Penrose +52
A key open problem in physics is the correct way to combine gravity (described by general relativity) with everything else (described by quantum mechanics). This problem suggests t…