69 citations · 251 across the 22 of their papers we have counts for
11 papers · 1 filter
Programmable photonic state fusion via heralded storage of asynchronously generated resources
Mustafa Gündoğan, Dennis Rätzel
Probabilistic photonic sources generate elementary states in different trials, whereas multiphoton protocols require them to interfere in common temporal modes. We propose a fusion…
Cascaded Optomechanical Sensing for Small Signals
Marta Maria Marchese, Daniel Braun, Stefan Nimmrichter +1
We propose a sensing scheme for detecting weak forces that achieves Heisenberg-limited sensitivity without relying on entanglement or other non-classical resources. Our scheme util…
Pulse shape optimization against Doppler shifts and delays in optical quantum communication
Emanuel Schlake, Roy Barzel, Dennis Rätzel +1
High relative velocities and large distances in space-based quantum communication with satellites in lower earth orbits can lead to significant Doppler shifts and delays of the sig…
Spin Resonance Spectroscopy with an Electron Microscope
Philipp Haslinger, Stefan Nimmrichter, Dennis Rätzel
Coherent spin resonance methods, such as nuclear magnetic resonance and electron spin resonance spectroscopy, have led to spectrally highly sensitive, non-invasive quantum imaging…
Enhanced Gravitational Entanglement via Modulated Optomechanics
A. Douglas K. Plato, Dennis Rätzel, Chuanqi Wan
The role of entanglement in determining the non-classicality of a given interaction has gained significant traction over the last few years. In particular, as the basis for new exp…
Entanglement dynamics of photon pairs and quantum memories in the gravitational field of the earth
Roy Barzel, Mustafa Gündoğan, Markus Krutzik +2
We investigate the effect of entanglement dynamics due to gravity -- the basis of a mechanism of universal decoherence -- for photonic states and quantum memories in Mach-Zehnder a…
Constraining modified gravity with quantum optomechanics
Sofia Qvarfort, Dennis Rätzel, Stephen Stopyra
We derive the best possible bounds that can be placed on Yukawa- and chameleon-like modifications to the Newtonian gravitational potential with a cavity optomechanical quantum sens…
A Quantum Klystron -- Controlling Quantum Systems with Modulated Electron Beams
Dennis Rätzel, Daniel Hartley, Osip Schwartz +1
Coherent control of quantum transitions -- indispensable in quantum technology -- generally relies on the interaction of quantum systems with electromagnetic radiation. Here, we th…
The effect of polarization entanglement in photon-photon scattering
Dennis Rätzel, Martin Wilkens, Ralf Menzel
It is found that the differential cross section of photon-photon scattering is a function of the degree of polarization entanglement of the two-photon state. A reduced, general exp…
Gravitational properties of light - The gravitational field of a laser pulse
Dennis Rätzel, Martin Wilkens, Ralf Menzel
The gravitational field of a laser pulse of finite lifetime, is investigated in the framework of linearized gravity. Although the effects are very small, they may be of fundamental…
The effect of entanglement in gravitational photon-photon scattering
Dennis Rätzel, Martin Wilkens, Ralf Menzel
The differential cross section for gravitational photon-photon scattering calculated in Perturbative Quantum Gravity is shown to depend on the degree of polarization entanglement o…