Qubit-Coupled Mechanics - IFSC
Qubit-Coupled Mechanics - IFSC
Qubit-Coupled Mechanics - IFSC
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Thermal Noise<br />
E<br />
Energy Spectrum<br />
The Environment: (e.g. charge fluctuations ;<br />
phonons from substrate, EM radiation, etc)<br />
Energy levels only account Roukes for<br />
KE and PE due to restoring force<br />
PE<br />
ħω 0<br />
Oscillator<br />
Embedded in<br />
an ‘environment’<br />
H = 1 2 k 0χ̂0 2 + p̂0 2<br />
2m 0<br />
KE<br />
E = ħω 0 N + 1 2<br />
N = 1<br />
N = 0<br />
N = 3<br />
N = 2<br />
x<br />
Environment is<br />
Source of random<br />
fluctuations that ‘kick’<br />
And damp resonator.<br />
Nanoresonator as S.H.O.<br />
k<br />
m x<br />
Environment<br />
Temp. T
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