Effect of relativity and vacuum fluctuations on quantum measurement
arXiv:2203.13187 · doi:10.1103/PhysRevD.105.105027
Abstract
Vacuum fluctuations can obscure the detection signal of the measurement of the smallest quantum objects like single particles seemingly implying a fundamental limit to measurement accuracy. However, as we show relativistic invariance implies the disappearance of fluctuations for the space-like spectrum of an observable at zero temperature. This complete absence of noise can be harnessed to perform noiseless measurement of single particles, as we illustrate for electrons or photons. We outline a general scheme to illustrate the noiseless measurement involving the space-like spectrum of observables based on the self-interference of counter-propagating paths of a single particle in a triangular Sagnac interferometer.
arXiv comment15 pages, 7 figures
References in corpus (23)
- Topological Insulators
- Discovery of a Three-dimensional Topological Dirac Semimetal, Na3Bi
- Introduction to Quantum Noise, Measurement and Amplification
- Observation of a topological 3D Dirac semimetal phase in high-mobility Cd3As2
- Experimental Realization of a Three-Dimensional Dirac Semimetal
- Quantum Information and Relativity Theory
- Mach-Zehnder Interferometry in a Strongly Driven Superconducting Qubit
- Evidence for light-by-light scattering in heavy-ion collisions with the ATLAS detector at the LHC
- An Infalling Observer in AdS/CFT
- Amplifying Single-Photon Nonlinearity Using Weak Measurement
- Observation of light-by-light scattering in ultraperipheral Pb+Pb collisions with the ATLAS detector
- Accelerated Detector - Quantum Field Correlations: From Vacuum Fluctuations to Radiation Flux
- Renormalized Unruh-DeWitt Particle Detector Models for Boson and Fermion Fields
- Tuning between photon-number and quadrature measurements with weak-field homodyne detection
- Relativistic quantum measurement
- Noninvasiveness and time symmetry of weak measurements
- Time of arrival and localization of relativistic particles
- Conservation laws in quantum noninvasive measurements
- A Bound on Thermal Relativistic Correlators at Large Spacelike Momenta
- Relativistic invariance of the vacuum
- Objective realism and freedom of choice in relativistic quantum field theory
- Testing locality and noncontextuality with the lowest moments
- Quantum Objective Realism