Electronic implementations of Interaction-Free Measurements
arXiv:1004.1895 · doi:10.1103/PhysRevB.82.045403
Abstract
Three different implementations of interaction-free measurements (IFMs) in solid-state nanodevices are discussed. The first one is based on a series of concatenated Mach-Zehnder interferometers, in analogy to optical-IFM setups. The second one consists of a single interferometer and concatenation is achieved in the time domain making use of a quantized electron emitter. The third implementation consists of an asymmetric Aharonov-Bohm ring. For all three cases we show that the presence of a dephasing source acting on one arm of the interferometer can be detected without degrading the coherence of the measured current. Electronic implementations of IFMs in nanoelectronics may play a fundamental role as very accurate and noninvasive measuring schemes for quantum devices.
12 pages, 10 figures
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Cited by in corpus (11)
- Tuning the Aharonov-Bohm effect with dephasing in nonequilibrium transport
- Measuring Which-Path Information with Coupled Electronic Mach-Zehnder Interferometers
- Defining SLE in multiply connected domains with the Brownian loop measure
- Interactions in Electronic Mach-Zehnder Interferometers with Copropagating Edge Channels
- Tuning Fano resonances by magnetic forces for electron transport through a quantum wire side-coupled to a quantum ring
- Coherent interaction-free detection of microwave pulses with a superconducting circuit
- Magnetic forces and localized resonances in electron transfer through quantum rings
- Many-body manifestation of interaction-free measurement: the Elitzur-Vaidman bomb
- Interaction-free measurement study as a quantum channel discrimination problem
- Experimenting quantum phenomena on NISQ computers using high level quantum programming
- Interaction-free measurement with mesoscopic devices on a GaAs/AlGaAs heterostructure