7 papers · 1 filter
Superluminal Quantum Reference Frames
Amrapali Sen, Matthias Salzger, Åukasz Rudnicki
While particles cannot travel faster than the speed of light, nor can information, this assumption has over the years been frequently questioned. Most recently, it has been argued…
Quantum thermodynamics as a gauge theory
Gabriel Fernandez Ferrari, Åukasz Rudnicki, Lucas Chibebe Céleri
Thermodynamics is based on a coarse-grained approach, from which its fundamental variables emerge, effectively erasing the complicate details of the microscopic dynamics within a m…
Quantum uncertainty of optical coherence
Martti Hanhisalo, Mohammad Sajjad Mirmoosa, Tero Setälä +2
Light is known to exhibit quantum uncertainty in terms of its amplitude, phase, and polarization. However, quantum uncertainty related to coherence, which is also a fundamental phy…
Formal relation between Pegg-Barnett and Paul quantum phase frameworks
Tomasz Linowski, Konrad Schlichtholz, Åukasz Rudnicki
The problem of defining a hermitian quantum phase operator is nearly as old as quantum mechanics itself. Throughout the years, a number of solutions was proposed, ranging from abst…
Superresolution in separation estimation between two dynamic incoherent sources using spatial demultiplexing
Konrad Schlichtholz, Åukasz Rudnicki
Achieving resolution in the sub-Rayleigh regime (superresolution) is one of the rapidly developing topics in quantum optics and metrology. Recently, it was shown that perfect measu…
Spectral and temporal metrology with bandlimited functions and finite-time measurements
Åukasz Rudnicki, Tomasz Linowski
We perform an analysis supplementing the metrology toolbox in the time-frequency domain. While the relevant time-frequency-based metrological protocols can be borrowed from the spa…