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7 papers · 2 filters
Bell Inequalities for Continuously Emitting Sources
Emanuel Knill, Scott Glancy, Sae Woo Nam +2
A common experimental strategy for demonstrating non-classical correlations is to show violation of a Bell inequality by measuring a continuously emitted stream of entangled photon…
Numerical detection of symmetry enriched topological phases with space group symmetry
Ling Wang, Andrew Essin, Michael Hermele +1
Topologically ordered phases of matter, in particular so-called symmetry enriched topological (SET) phases, can exhibit quantum number fractionalization in the presence of global s…
Conditional Ramsey Spectroscopy with Synchronized Atoms
Minghui Xu, M. J. Holland
We investigate Ramsey spectroscopy performed on a synchronized ensemble of two-level atoms. The synchronization is induced by the collective coupling of the atoms to a heavily damp…
Optomechanical Raman-Ratio Thermometry
T. P. Purdy, P. -L. Yu, N. S. Kampel +4
The temperature dependence of the asymmetry between Stokes and anti-Stokes Raman scattering can be exploited for self-calibrating, optically-based thermometry. In the context of ca…
Measuring a topological transition in an artificial spin 1/2 system
M. D. Schroer, M. H. Kolodrubetz, W. F. Kindel +6
We present measurements of a topological property, the Chern number (), of a closed manifold in the space of two-level system Hamiltonians, where the two-level system…
Optimizing Passive Quantum Clocks
Michael Mullan, Emanuel Knill
We describe protocols for passive atomic clocks based on quantum interrogation of the atoms. Unlike previous techniques, our protocols are adaptive and take advantage of prior info…