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quant-ph2026★ 40 cited

Exploiting ionization dynamics in the nitrogen vacancy center for rapid, high-contrast spin and charge state initialization

Daniel Wirtitsch, Georg Wachter, Sarah Reisenbauer +6

We propose and experimentally demonstrate a method to strongly increase the sensitivity of spin measurements on nitrogen-vacancy (NV) centers in diamond, which can be readily imple…

quant-ph2026★ 2 cited

Distribution of GHz sequential Time-bin Entanglement in a Metropolitan Fiber Network

Martin Achleitner, Alessandro Trenti, Philip Walther +1

Efficient generation and high-quality distribution of entanglement is becoming increasingly more relevant in the field of quantum technologies, with important applications such as…

quant-ph2025★ 2 cited

50-km fiber interferometer for testing gravitational signatures in quantum interference

Haocun Yu, Dorotea Macri, Thomas Morling +10

Quantum mechanics and general relativity are the foundational pillars of modern physics, yet experimental tests that combine the two frameworks remain rare. Measuring optical phase…

quant-ph2025★ 2 cited

Local Invariance of Divergence-based Quantum Information Measures

Christopher Popp, Tobias C. Sutter, Beatrix C. Hiesmayr

Quantum information quantities, such as mutual information and entropies, are essential for characterizing quantum systems and protocols in quantum information science. In this con…

quant-ph2025

Correlations in a quantum switch-based heat engine with measurements: A proof-of-principle demonstration

Vinicius F. Lisboa, Pedro R. Dieguez, Kyrylo Simonov +1

Allowing the order of quantum operations to exist in superposition is known to open new routes for thermodynamic tasks. We investigate a quantum heat engine where energy exchanges…

quant-ph2025

Quantum Interference and the Limits of Separability

Sebastian Horvat

Quantum theory implies, and empirical evidence confirms, that while particles exhibit wave-like behavior in interferometric experiments, this behavior is so limited…