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Observing and evading quantum back-action on a kilogram-scale oscillator
Begüm Kabagöz, Eric Oelker, Dhruva Ganapathy +203
Continuous quantum displacement measurements are fundamentally limited by a trade-off between readout imprecision and measurement back-action, constrained by the Heisenberg uncerta…
Scaling Quantum Networks via Phase-Stable Vacuum Beam Guide: Architectural Blueprint and Benchmark
Yuexun Huang, Delaney Smith, Pei Zeng +4
Scaling quantum networks to continental distances requires physical infrastructure capable of overcoming both exponential attenuation and severe phase decoherence. While the concep…
Vacuum Beam Guide for Large-Scale Quantum Networks
Yuexun Huang, Francisco Salces--Carcoba, Rana X Adhikari +2
The vacuum beam guide (VBG) presents a completely different solution for quantum channels to overcome the limitations of existing fiber and satellite technologies for long-distance…
Quantum precision limits of displacement noise free interferometers
Tuvia Gefen, Rajashik Tarafder, Rana X. Adhikari +1
Current laser-interferometric gravitational wave detectors suffer from a fundamental limit to their precision due to the displacement noise of optical elements contributed by vario…
Approaching the motional ground state of a 10 kg object
Chris Whittle, Evan D. Hall, Sheila Dwyer +197
The motion of a mechanical object -- even a human-sized object -- should be governed by the rules of quantum mechanics. Coaxing them into a quantum state is, however, difficult: th…
Broadband sensitivity improvement via coherent quantum feedback with PT symmetry
Xiang Li, Maxim Goryachev, Yiqiu Ma +4
A conventional resonant detector is often subject to a trade-off between bandwidth and peak sensitivity that can be traced back to quantum Cramer-Rao Bound. Anomalous dispersion ha…