499 citations · 642 across the 15 of their papers we have counts for
16 papers
Measurement-induced dynamics and emergent symmetries of particles moving in a one-dimensional lattice
Salvatore Di Lorenzo, Klaus Mølmer
Continuous measurements simultaneously reveal and modify the dynamics of a quantum system. In this work we consider the tunneling motion of particles between the sites of a one-dim…
Achieving the Quantum Limits with Twin-Field Sensors
Yaohua Li, Fan Yang, Klaus Mølmer
Continuous measurements play a fundamental role in quantum experiments, yet understanding and extracting the maximal possible information in a continuous probe signal remains a sig…
Efficient Description of Parametric Amplification of Quantum Pulses
Victor Rueskov Christiansen, Klaus Mølmer, Emanuel Hubenschmid
A single quantum pulse undergoing parametric amplification feeds into at most two pulses in the output. In this work, we present an efficient, analytical method for finding the qua…
The entangling power of non-entangling channels
Julien Pinske, Jan Sperling, Klaus Mølmer
There are processes that cannot generate entanglement but may, nevertheless, amplify entanglement already present in a system. Here, we show that a non-entangling operation can inc…
Censorship of quantum resources against catalytic account sharing
Julien Pinske, Klaus Mølmer
In quantum censorship, an agency oversees quantum communication in a public-domain network. The agency restricts the users communication to the free states of a quantum resource th…
Supercoherence: Harnessing Long-Range Interactions to Preserve Collective Coherence in Disordered Systems
Alexey Gorlach, Andrea Pizzi, Klaus Mølmer +3
Artificial quantum systems with synthetic dimensions enable exploring novel quantum phenomena difficult to create in conventional materials. These synthetic degrees of freedom incr…
Interactions in Quantum Networks with Pulse Propagation Delays
Victor Rueskov Christiansen, Klaus Mølmer
The finite speed of light of pulses implies propagation delays between the generation of light, the interaction with different elements along its path and the final detection at th…
Retrodiction of measurement outcomes on a single quantum system reveals entanglement with its environment
Julien Pinske, Klaus Mølmer
The density matrix yields probabilistic information about the outcome of measurements on a quantum system, but it does not distinguish between classical randomness in the preparati…
Stochastic Schrödinger equation for a homodyne measurement setup of strongly correlated systems
Aniket Patra, Felix Motzoi, Klaus Mølmer
Starting from an experimentally feasible atomic setup, we derive a stochastic Schrödinger equation that captures the homodyne detection record of a strongly interacting system. App…
Censorship of Quantum Resources in Quantum Networks
Julien Pinske, Klaus Mølmer
We may soon see agencies offering public access to quantum communication networks. In such networks it may be a feature that certain resources are available only to priority users…
Quantum smoothing for classical mixtures
D. Tan, M. Naghiloo, K. Mølmer +1
In quantum mechanics, wave functions and density matrices represent our knowledge about a quantum system and give probabilities for the outcomes of measurements. If the combined dy…
Estimation of classical parameters via continuous probing of complementary quantum observables
Antonio Negretti, Klaus Mølmer
We discuss how continuous probing of a quantum system allows estimation of unknown classical parameters embodied in the Hamiltonian of the system. We generalize the stochastic mast…
Multilevel Holstein-Primakoff approximation and its application to atomic spin squeezing and ensemble quantum memories
Z. Kurucz, K. Mølmer
We show that an ensemble of identical d-level atoms can be efficiently described by d-1 collective oscillator degrees of freedom in the vicinity of a product state with all atoms i…
Entanglement of two atomic samples by quantum non-demolition measurements
Antonio Di Lisi, Klaus Moelmer
This paper presents simulations of the state vector dynamics for a pair of atomic samples which are being probed by phase shift measurements on an optical beam passing through both…
Entanglement and Extreme Spin Squeezing
Anders Sorensen, Klaus Molmer
For any mean value of a cartesian component of a spin vector we identify the smallest possible uncertainty in any of the orthogonal components. The corresponding states are optimal…
Error free quantum communication through noisy channels
Anders Soerensen, Klaus Moelmer
We suggest a method to perform a quantum logic gate between distant qubits by off-resonant field-atom dispersive interactions. The scheme we present is shown to work ideally even i…