11 papers · 1 filter
Coherence as a resource for phase estimation
Felix Ahnefeld, Thomas Theurer, Martin B. Plenio
Quantum phase estimation is a core task in quantum technologies ranging from metrology to quantum computing, where it appears as a key subroutine in various algorithms. Here, we qu…
Single-shot entanglement manipulation of states and channels revisited
Thomas Theurer, Kun Fang, Gilad Gour
We study entanglement distillation and dilution of states and channels in the single-shot regime. With the help of a recently introduced conversion distance, we provide compact clo…
Complete Characterization of Entanglement Embezzlement
Elia Zanoni, Thomas Theurer, Gilad Gour
Using local operations and classical communication (LOCC), entanglement can be manipulated but not created. However, entanglement can be embezzled. In this work, we completely char…
Coherence of operations and interferometry
Michele Masini, Thomas Theurer, Martin B. Plenio
Quantum coherence is one of the key features that fuels applications for which quantum mechanics exceeds the power of classical physics. This explains the considerable efforts that…
Quantifying dynamical coherence with dynamical entanglement
Thomas Theurer, Saipriya Satyajit, Martin B. Plenio
Coherent superposition and entanglement are two fundamental aspects of non-classicality. Here we provide a quantitative connection between the two on the level of operations by sho…
Experimental quantification of coherence of a tunable quantum detector
Huichao Xu, Feixiang Xu, Thomas Theurer +5
Quantum coherence is a fundamental resource that quantum technologies exploit to achieve performance beyond that of classical devices. A necessary prerequisite to achieve this adva…