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Qudi: a modular python suite for experiment control and data processing
Jan M Binder, Alexander Stark, Nikolas Tomek +12
Qudi is a general, modular, multi-operating system suite written in Python 3 for controlling laboratory experiments. It provides a structured environment by separating functionalit…
Squeezing-enhanced measurement sensitivity in a cavity optomechanical system
Hugo Kerdoncuff, Ulrich B. Hoff, Glen I. Harris +2
We determine the theoretical limits to squeezing-enhanced measurement sensitivity of mechanical motion in a cavity optomechanical system. The motion of a mechanical resonator is tr…
Quantum Cloning of Binary Coherent States - Optimal Transformations and Practical Limits
Christian R. Müller, Gerd Leuchs, Christoph Marquardt +1
The notions of qubits and coherent states correspond to different physical systems and are described by specific formalisms. Qubits are associated with a two-dimensional Hilbert sp…
Practical quantum computing on encrypted data
Kevin Marshall, Christian S. Jacobsen, Clemens Schafermeier +3
The ability to perform computations on encrypted data is a powerful tool for protecting a client's privacy, especially in today's era of cloud and distributed computing. In terms o…
Quantum enhanced feedback cooling of a mechanical oscillator
Clemens Schäfermeier, Hugo Kerdoncuff, Ulrich B. Hoff +7
Laser cooling is a fundamental technique used in primary atomic frequency standards, quantum computers, quantum condensed matter physics and tests of fundamental physics, among oth…
Coupling single emitters to quantum plasmonic circuits
Alexander Huck, Ulrik L. Andersen
In recent years the controlled coupling of single photon emitters to propagating surface plasmons has been intensely studied, which is fueled by the prospect of a giant photonic no…
Measurement-induced macroscopic superposition states in cavity optomechanics
Ulrich B. Hoff, Johann Kollath-Bönig, Jonas S. Neergaard-Nielsen +1
We present a novel proposal for generating quantum superpositions of macroscopically distinct states of a bulk mechanical oscillator, compatible with existing optomechanical device…