Macroscopic Quantum Test with Bulk Acoustic Wave Resonators
Publikation: Bidrag til tidsskrift › Letter › Forskning › fagfællebedømt
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Macroscopic Quantum Test with Bulk Acoustic Wave Resonators. / Schrinski, Bjorn; Yang, Yu; von Lupke, Uwe; Bild, Marius; Chu, Yiwen; Hornberger, Klaus; Nimmrichter, Stefan; Fadel, Matteo.
I: Physical Review Letters, Bind 130, Nr. 13, 133604, 31.03.2023.Publikation: Bidrag til tidsskrift › Letter › Forskning › fagfællebedømt
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TY - JOUR
T1 - Macroscopic Quantum Test with Bulk Acoustic Wave Resonators
AU - Schrinski, Bjorn
AU - Yang, Yu
AU - von Lupke, Uwe
AU - Bild, Marius
AU - Chu, Yiwen
AU - Hornberger, Klaus
AU - Nimmrichter, Stefan
AU - Fadel, Matteo
PY - 2023/3/31
Y1 - 2023/3/31
N2 - Recently, solid-state mechanical resonators have become a platform for demonstrating nonclassical behavior of systems involving a truly macroscopic number of particles. Here, we perform the most macroscopic quantum test in a mechanical resonator to date, which probes the validity of quantum mechanics by ruling out a classical description at the microgram mass scale. This is done by a direct measurement of the Wigner function of a high-overtone bulk acoustic wave resonator mode, monitoring the gradual decay of negativities over tens of microseconds. While the obtained macroscopicity of mu 1/4 11.3 is on par with state-of-the-art atom interferometers, future improvements of mode geometry and coherence times could test the quantum superposition principle at unprecedented scales and also place more stringent bounds on spontaneous collapse models.
AB - Recently, solid-state mechanical resonators have become a platform for demonstrating nonclassical behavior of systems involving a truly macroscopic number of particles. Here, we perform the most macroscopic quantum test in a mechanical resonator to date, which probes the validity of quantum mechanics by ruling out a classical description at the microgram mass scale. This is done by a direct measurement of the Wigner function of a high-overtone bulk acoustic wave resonator mode, monitoring the gradual decay of negativities over tens of microseconds. While the obtained macroscopicity of mu 1/4 11.3 is on par with state-of-the-art atom interferometers, future improvements of mode geometry and coherence times could test the quantum superposition principle at unprecedented scales and also place more stringent bounds on spontaneous collapse models.
KW - STATE
U2 - 10.1103/PhysRevLett.130.133604
DO - 10.1103/PhysRevLett.130.133604
M3 - Letter
C2 - 37067306
VL - 130
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 13
M1 - 133604
ER -
ID: 344975673