Sensitivity of a micromechanical displacement detector based on the radio-frequency single-electron transistor

Blencowe, M. P.; Wybourne, M. N.

doi:10.1063/1.1331090

Cited by 84 publications

(94 citation statements)

References 16 publications

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“…Many schemes proposed for sensitive measurement applications have invoked the promise of the RF-SET for fast and ultrasensitive charge detection. These include quantum bits based on nuclear spins in silicon, 2 charged particle detectors, 3 quantum nanomechanical oscillations, 4 and single terahertz photon counters. [5][6][7][8] It is one of the only tools for detecting single electron charges at the nanometer scale and with gigahertz bandwidth.…”

Section: Introductionmentioning

confidence: 99%

Noise performance of the radio-frequency single-electron transistor

Roschier¹,

Hakonen²,

Bladh

et al. 2004

Journal of Applied Physics

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Articles you may be interested inWe have analyzed a radio-frequency single-electron-transistor ͑RF-SET͒ circuit that includes a high-electron-mobility-transistor ͑HEMT͒ amplifier, coupled to the single-electron-transistor ͑SET͒ via an impedance transformer. We consider how power is transferred between different components of the circuit, model noise components, and analyze the operating conditions of practical importance. The results are compared with experimental data on SETs. Good agreement is obtained between our noise model and the experimental results. Our analysis shows, also, that the biggest improvement to the present RF-SETs will be achieved by increasing the charging energy and by lowering the HEMT amplifier noise contribution.

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Section: Introductionmentioning

confidence: 99%

Noise performance of the radio-frequency single-electron transistor

Roschier¹,

Hakonen²,

Bladh

et al. 2004

Journal of Applied Physics

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show abstract

“…In our analysis we will use the theory of the dc-SET. While an experiment would most likely use a radio-frequency SET, 8,20 the characteristic frequency of a SET is typically of the order of 10 GHz, so that the rf drive looks constant to the SET, and the dc-SET equations can be used. We will use a quantum mechanical model of the measurement and feedback process, but discuss how, in this case, such a description is equivalent to a classical measurement of a noisy classical system.…”

Section: Introductionmentioning

confidence: 99%

Feedback cooling of a nanomechanical resonator

et al. 2003

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Cooled, low-loss nanomechanical resonators offer the prospect of directly observing the quantum dynamics of mesoscopic systems. However, the present state of the art requires cooling down to the milliKelvin regime in order to observe quantum effects. Here we present an active feedback strategy based on continuous observation of the resonator position for the purpose of obtaining these low temperatures. In addition, we apply this to an experimentally realizable configuration, where the position monitoring is carried out by a single-electron transistor. Our estimates indicate that with current technology this technique is likely to bring the required low temperatures within reach.

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“…In particular, the position measurement accuracy within the factor 5.8 from the standard quantum limit has been demonstrated [14]; here is the width (standard deviation) of the ground state of the oscillator with mass . Measurement of the nanoresonator position by RF-SET or QPC has also received a significant theoretical attention [16]- [22], [49], [50]. The process of measurement transfers the energy from the detector to the nanoresonator leading to its "heating" [16], [17], [49], [50].…”

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confidence: 99%

Quantum Nondemolition Squeezing of a Nanomechanical Resonator

Ruskov

Schwab

Korotkov

2005

IEEE Trans. Nanotechnology

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Abstract-We show that the nanoresonator position can be squeezed significantly below the ground state level by measuring the nanoresonator with a quantum point contact or a single-electron transistor and applying a periodic voltage across the detector. The mechanism of squeezing is basically a generalization of quantum nondemolition measurement of an oscillator to the case of continuous measurement by a weakly coupled detector. The quantum feedback is necessary to prevent the "heating" due to measurement back-action. We also discuss a procedure of experimental verification of the squeezed state.Index Terms-Nano-electromechanical systems (NEMS), quantum feedback, squeezing.

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Sensitivity of a micromechanical displacement detector based on the radio-frequency single-electron transistor

Cited by 84 publications

References 16 publications

Noise performance of the radio-frequency single-electron transistor

Noise performance of the radio-frequency single-electron transistor

Feedback cooling of a nanomechanical resonator

Quantum Nondemolition Squeezing of a Nanomechanical Resonator

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