Journal ArticleDOI
Amplifying quantum signals with the single-electron transistor
Michel Devoret,Robert Schoelkopf +1 more
TLDR
Although it is unlikely that SETs will replace FETs in conventional electronics, they should prove useful in ultra-low-noise analog applications and approach closely the quantum limit of sensitivity.Abstract:
Transistors have continuously reduced in size and increased in switching speed since their invention in 1947. The exponential pace of transistor evolution has led to a revolution in information acquisition, processing and communication technologies. And reigning over most digital applications is a single device structure--the field-effect transistor (FET). But as device dimensions approach the nanometre scale, quantum effects become increasingly important for device operation, and conceptually new transistor structures may need to be adopted. A notable example of such a structure is the single-electron transistor, or SET. Although it is unlikely that SETs will replace FETs in conventional electronics, they should prove useful in ultra-low-noise analog applications. Moreover, because it is not affected by the same technological limitations as the FET, the SET can approach closely the quantum limit of sensitivity. It might also be a useful read-out device for a solid-state quantum computer.read more
Citations
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Cavity quantum electrodynamics for superconducting electrical circuits: An architecture for quantum computation
Alexandre Blais,Ren-Shou Huang,Ren-Shou Huang,Andreas Wallraff,Steven Girvin,Robert Schoelkopf +5 more
TL;DR: In this paper, a realizable architecture using one-dimensional transmission line resonators was proposed to reach the strong coupling limit of cavity quantum electrodynamics in superconducting electrical circuits.
Journal ArticleDOI
Quantum-state engineering with Josephson-junction devices
TL;DR: In this article, the authors review the properties of low-capacitance Josephson tunneling junctions and the practical and fundamental obstacles to their use for quantum information processing and describe how the basic physical manipulations on an ideal device can be combined to perform useful operations.
Journal ArticleDOI
Introduction to quantum noise, measurement, and amplification
TL;DR: In this paper, a pedagogical introduction to the physics of quantum noise and its connections to quantum measurement and quantum amplification is given, and the basics of weak continuous measurements are described.
Journal ArticleDOI
Superconducting quantum bits
TL;DR: Superconducting quantum bits (qubits) form the key component of these circuits and their quantum state is manipulated by using electromagnetic pulses to control the magnetic flux, the electric charge or the phase difference across a Josephson junction.
Journal ArticleDOI
Electric-field sensing using single diamond spins
Florian Dolde,Helmut Fedder,Marcus W. Doherty,Tobias Nöbauer,F. Rempp,Gopalakrishnan Balasubramanian,Thomas Wolf,Friedemann Reinhard,Lloyd C. L. Hollenberg,Fedor Jelezko,Joerg Wrachtrup +10 more
TL;DR: In this paper, point defects in diamond known as nitrogen-vacancy centres have been shown to be sensitive to minute magnetic fields, even at room temperature, and a demonstration that the spin associated with these defect centres is also sensitive to electric fields holds out the prospect of a sensor that can resolve single spins and single elementary charges at the nanoscale.
References
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Journal ArticleDOI
Quantum computation with quantum dots
TL;DR: In this paper, a universal set of one-and two-quantum-bit gates for quantum computation using the spin states of coupled single-electron quantum dots is proposed, and the desired operations are effected by the gating of the tunneling barrier between neighboring dots.
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A silicon-based nuclear spin quantum computer
TL;DR: In this paper, a scheme for implementing a quantum-mechanical computer is presented, where information is encoded onto the nuclear spins of donor atoms in doped silicon electronic devices.
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Coherent control of macroscopic quantum states in a single-Cooper-pair box
TL;DR: In this article, a single-Cooper-pair box with a gate electrode was used to control the coherent quantum state evolution, which modifies the energies of the two charge states non-adiabatically, bringing them into resonance.
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Quantum limits on noise in linear amplifiers
TL;DR: In this paper, a multimode analysis of phase-sensitive linear amplifiers is presented, where a lower bound on the noise carried by one quadrature phase of a signal and a corresponding lower limit on the amount of noise that a high-gain linear amplifier must add to another is established.