Direct observation of deterministic macroscopic entanglement
- URL: http://arxiv.org/abs/2004.05515v2
- Date: Mon, 6 Sep 2021 10:13:06 GMT
- Title: Direct observation of deterministic macroscopic entanglement
- Authors: Shlomi Kotler, Gabriel A. Peterson, Ezad Shojaee, Florent Lecocq,
Katarina Cicak, Alex Kwiatkowski, Shawn Geller, Scott Glancy, Emanuel Knill,
Raymond W. Simmonds, Jos\'e Aumentado, John D. Teufel
- Abstract summary: Quantum entanglement of mechanical systems emerges when distinct objects move with such a high degree of correlation that they can no longer be described separately.
Here, using pulsed electromechanics, we deterministically entangle two mechanical drumheads with masses of 70 pg.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Quantum entanglement of mechanical systems emerges when distinct objects move
with such a high degree of correlation that they can no longer be described
separately. Although quantum mechanics presumably applies to objects of all
sizes, directly observing entanglement becomes challenging as masses increase,
requiring measurement and control with a vanishingly small error. Here, using
pulsed electromechanics, we deterministically entangle two mechanical drumheads
with masses of 70 pg. Through nearly quantum-limited measurements of the
position and momentum quadratures of both drums, we perform quantum state
tomography and thereby directly observe entanglement. Such entangled
macroscopic systems are uniquely poised to serve in fundamental tests of
quantum mechanics, enable sensing beyond the standard quantum limit, and
function as long-lived nodes of future quantum networks.
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