3.9k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Institute for Quantum Optics and Quantum Information InnsbruckAT973 papers
- Universität InnsbruckAT944 papers
- Institute of High Energy PhysicsCN842 papers
- University of ViennaAT835 papers
- Centre National de la Recherche ScientifiqueFR824 papers
- Space Research InstituteRU796 papers
- European Organization for Nuclear ResearchCH470 papers
- ETH ZurichCH461 papers
- Korea UniversityKR441 papers
- National Taiwan UniversityTW436 papers
- Panjab UniversityIN432 papers
- Sungkyunkwan UniversityKR432 papers
86 papers · 2 filters
Entanglement phase diagrams from partial transpose moments
Jose Carrasco, Matteo Votto, Vittorio Vitale +5
We present experimentally and numerically accessible quantities that can be used to differentiate among various families of random entangled states. To this end, we analyze the ent…
Quantum Reference Frames for Lorentz Symmetry
Luca Apadula, Esteban Castro-Ruiz, Časlav Brukner
Since their first introduction, Quantum Reference Frame (QRF) transformations have been extensively discussed, generalising the covariance of physical laws to the quantum domain. D…
Leggett-Garg Macrorealism and temporal correlations
Giuseppe Vitagliano, Costantino Budroni
Leggett and Garg formulated macrorealist models encoding our intuition on classical systems, i.e., physical quantities have a definite value that can be measured with minimal distu…
Observation of magnon bound states in the long-range, anisotropic Heisenberg model
Florian Kranzl, Stefan Birnkammer, Manoj K. Joshi +4
Over the recent years coherent, time-periodic modulation has been established as a versatile tool for realizing novel Hamiltonians. Using this approach, known as Floquet engineerin…
Comparison of Spontaneous Emission in Trapped Ion Multiqubit Gates at High Magnetic Fields
Allison L. Carter, Sean R. Muleady, Athreya Shankar +5
Penning traps have been used for performing quantum simulations and sensing with hundreds of ions and provide a promising route toward scaling up trapped ion quantum platforms beca…
Lower Bounding Ground-State Energies of Local Hamiltonians Through the Renormalization Group
Ilya Kull, Norbert Schuch, Ben Dive +1
Given a renormalization scheme, we show how to formulate a tractable convex relaxation of the set of feasible local density matrices of a many-body quantum system. The relaxation i…
Indefinite causal order and quantum coordinates
Anne-Catherine de la Hamette, Viktoria Kabel, Marios Christodoulou +1
Classically the causal order of two timelike separated events A and B is fixed -- either A before B or B before A. This is no longer true in quantum theory, where it is possible to…
Quantum state tomography of undetected photons
Jorge Fuenzalida, Jaroslav Kysela, Krishna Dovzhik +4
The measurement of quantum states is one of the most important problems in quantum mechanics. We introduce a quantum state tomography technique in which the state of a qubit is rec…
Characterizing entanglement dimensionality from randomized measurements
Shuheng Liu, Qiongyi He, Marcus Huber +2
We consider the problem of detecting the dimensionality of entanglement with the use of correlations between measurements in randomized directions. First, exploiting the recently d…
All optical quantum information processing via a single step Rydberg blockade gate
Mohammadsadegh Khazali
One of the critical elements in the realization of the quantum internet are deterministic two-photon gates. This photonic gate also completes a set of universal gates for all-…
High-Q magnetic levitation and control of superconducting microspheres at millikelvin temperatures
Joachim Hofer, Rudolf Gross, Gerard Higgins +11
We report the levitation of a superconducting lead-tin sphere with 100 micrometer diameter (corresponding to a mass of 5.6 micrograms) in a static magnetic trap formed by two coils…
Quantum key distribution rates from semidefinite programming
Mateus Araújo, Marcus Huber, Miguel Navascués +2
Computing the key rate in quantum key distribution (QKD) protocols is a long standing challenge. Analytical methods are limited to a handful of protocols with highly symmetric meas…
Control of Localized Multiple Excitation Dark States in Waveguide QED
Raphael Holzinger, Ricardo Gutierrez-Jauregui, Teresa Hönigl-Decrinis +3
Subradiant excited states in finite chains of two-level quantum emitters coupled to a one-dimensional reservoir are a resource for superior photon storage and controlled photon man…
Protocols for Rydberg entangling gates featuring robustness against quasi-static errors
Charles Fromonteil, Dolev Bluvstein, Hannes Pichler
We introduce a novel family of protocols for entangling gates for neutral atom qubits based on the Rydberg blockade mechanism. These protocols realize controlled-phase gates throug…
Simultaneous ground-state cooling of two mechanical modes of a levitated nanoparticle
Johannes Piotrowski, Dominik Windey, Jayadev Vijayan +7
The quantum ground state of a massive mechanical system is a steppingstone for investigating macroscopic quantum states and building high fidelity sensors. With the recent achievem…
Optomechanical sideband asymmetry explained by stochastic electrodynamics
Lukas Novotny, Martin Frimmer, Andrei Militaru +3
Within the framework of stochastic electrodynamics we derive the noise spectrum of a laser beam reflected from a suspended mirror. The electromagnetic field follows Maxwell's equat…
Theory-independent randomness generation from spatial symmetries
Caroline L. Jones, Stefan L. Ludescher, Albert Aloy +1
We demonstrate a fundamental relation between the structures of physical space and of quantum theory: the set of quantum correlations in a rotational prepare-and-measure scenario c…
Superconducting microsphere magnetically levitated in an anharmonic potential with integrated magnetic readout
Martí Gutierrez Latorre, Gerard Higgins, Achintya Paradkar +2
Magnetically levitated superconducting microparticles offer a promising path to quantum experiments with picogram to microgram objects. In this work, we levitate a 700ng $\sim 10^{…
Admissible Causal Structures and Correlations
Eleftherios-Ermis Tselentis, Ämin Baumeler
It is well-known that if one assumes quantum theory to hold locally, then processes with indefinite causal order and cyclic causal structures become feasible. Here, we study qualit…
A telecom-wavelength quantum repeater node based on a trapped-ion processor
Victor Krutyanskiy, Marco Canteri, Martin Meraner +5
A quantum repeater node is presented based on trapped ions that act as single photon emitters, quantum memories and an elementary quantum processor. The node's ability to establish…
Entanglement barrier and its symmetry resolution: theory and experiment
Aniket Rath, Vittorio Vitale, Sara Murciano +6
The operator entanglement (OE) is a key quantifier of the complexity of a reduced density matrix. In out-of-equilibrium situations, e.g. after a quantum quench of a product state,…
On the role of entanglement in qudit-based circuit compression
Xiaoqin Gao, Paul Appel, Nicolai Friis +2
Gate-based universal quantum computation is formulated in terms of two types of operations: local single-qubit gates, which are typically easily implementable, and two-qubit entang…
Enhancing Detection of Topological Order by Local Error Correction
Iris Cong, Nishad Maskara, Minh C. Tran +5
The exploration of topologically-ordered states of matter is a long-standing goal at the interface of several subfields of the physical sciences. Such states feature intriguing phy…
Suppressing Recoil Heating in Levitated Optomechanics using Squeezed Light
C. Gonzalez-Ballestero, J. A. Zielińska, M. Rossi +5
We theoretically show that laser recoil heating in free-space levitated optomechanics can be arbitrarily suppressed by shining squeezed light onto an optically trapped nanoparticle…