Observable Measure of Quantum Coherence in Finite Dimensional Systems
National University of Singapore · University of Oxford
Abstract
Quantum coherence is the key resource for quantum technology, with applications in quantum optics, information processing, metrology, and cryptography. Yet, there is no universally efficient method for quantifying coherence either in theoretical or in experimental practice. I introduce a framework for measuring quantum coherence in finite dimensional systems. I define a theoretical measure which satisfies the reliability criteria established in the context of quantum resource theories. Then, I present an experimental scheme implementable with current technology which evaluates the quantum coherence of an unknown state of a d-dimensional system by performing two programmable measurements on an ancillary qubit,…
Citation impact
- FWCI
- 68.91
- Percentile
- 100%
- References
- 64
Authors
1Topics & keywords
- Observable
- Measure (data warehouse)
- Coherence (philosophical gambling strategy)
- Quantum
- Physics
- Quantum mechanics
- Statistical physics
- Quantum discord