A machine learning approach to Bayesian parameter estimation
npj Quantum Information, Published online: 10 December 2021; doi:10.1038/s41534-021-00497-w A machine learning approach to Bayesian parameter estimation
A new super-cooled microwave source boosts the scale-up of quantum computers
Researchers have developed a circuit that produces the high-quality microwave signals required to control quantum computers while operating at temperatures near absolute zero. This is a key step towards moving the control system closer to […]
Many body seminar: *Local Lindbladians: Correlations and Phases (journal club)*
Georgios Styliaris (MPQ)Locality in quantum Hamiltonians places fundamental constraints the nature of correlations, and in particular gives rise to a meaningful classification of phases.
Dynamic synthesis of Heisenberg-limited spin squeezing
npj Quantum Information, Published online: 09 December 2021; doi:10.1038/s41534-021-00505-z Dynamic synthesis of Heisenberg-limited spin squeezing
Quantum Information & Computing Meeting: Forecasting Chaotic Dynamics with Machine Learning
Cosimo Rusconi (MPQ):I will present the paper PRL 120, 024102 (2018) (see also article cover at QuantaMagazine) where the authors implement a recurrent neural network (RNN) which is able to predict the dynamics of a […]
Temporal distinguishability in Hong-Ou-Mandel interference for harnessing high-dimensional frequency entanglement
npj Quantum Information, Published online: 07 December 2021; doi:10.1038/s41534-021-00504-0 Temporal distinguishability in Hong-Ou-Mandel interference for harnessing high-dimensional frequency entanglement
Less entanglement exhibiting more nonlocality with noisy measurements
npj Quantum Information, Published online: 06 December 2021; doi:10.1038/s41534-021-00506-y Less entanglement exhibiting more nonlocality with noisy measurements
Twisting elusive quantum particles with a quantum computer
While the number of qubits and the stability of quantum states are still limiting current quantum computing devices, there are questions where these processors are already able to leverage their enormous computing power. Scientists used […]
Researchers develop an algorithm to increase the efficiency of quantum computers
Quantum computing is taking a new leap forward due to new research. The team of researchers have proposed a scheme to reduce the number of calculations needed to read out data stored in the state […]
Artificial material protects light states on smallest length scales
Light not only plays a key role as an information carrier for optical computer chips, but also in particular for the next generation of quantum computers. Its lossless guidance around sharp corners on tiny chips […]
Physicists exploit space and time symmetries to control quantum materials
Physicists have developed a theory describing how space reflection and time reversal symmetries can be exploited, allowing for greater control of transport and correlations within quantum materials. Read More Quantum Computers News — ScienceDaily
Never-before-seen state of matter: Quantum spin liquids
Physicists said they have finally experimentally documented quantum spin liquids, a long sought-after exotic state of matter. The work marks a big step toward being able to produce this elusive state on demand and to […]
Green information technologies: Superconductivity meets spintronics
Superconducting coupling between two regions separated by a one micron wide ferromagnetic compound has been proved by an international team. This macroscopic quantum effect, known as Josephson effect, generates an electrical current within the ferromagnetic […]
Many Body Seminar: *Long time evolution of local observables with tensor networks*
Miguel Bello (MPQ):Building on last week’s discussion, I’d like to present an ongoing project of Mari Carmen and me where we try transform the long range entanglement generated after a global quantum quench into mixture.
Thriving in non-equilibrium
Researchers used the Frontera supercomputer to explore light-induced superconductivity a pulsed laser, which is believed to be a promising route to room-temperature superconductors. They found that d-wave superconductivity can be enhanced by a pulsed laser, […]
Quantum generative adversarial networks with multiple superconducting qubits
npj Quantum Information, Published online: 01 December 2021; doi:10.1038/s41534-021-00503-1 Quantum generative adversarial networks with multiple superconducting qubits
Shrinking qubits for quantum computing with atom-thin materials
Current approaches to create superconducting qubits for quantum computers yield chips that are substantially larger than those found in classical computers. To shrink things down, researchers have taken advantage of atomically thin, 2D materials to […]
Time crystal in a quantum computer
Researchers have created and observed a new phase of matter, popularly known as a time crystal. Read More Quantum Computers News — ScienceDaily
Constraining quantum measurement
The quantum world and our everyday world are very different places. Physicists now investigate how the act of measuring a quantum particle transforms it into an everyday object. Read More Quantum Computers News — ScienceDaily
Quantum computers getting connected
Research into superfast quantum computers is now well advanced, but it is not yet possible to connect the individual processors. An international research team has now shown a way to scale quantum computers using nanophotonic […]
Quantum Information and Computing Meeting: Quantum complexity in random circuits
Philippe FaistQuantifying quantum states’ complexity is a key problem in various subfields of science, from quantum computing to black-hole physics.
Quantum Optics Seminar: Macroscopic condensation of photon noise in sharply nonlinear dissipative systems
Dominik Wild (MPQ)The preparation of macroscopic non-Gaussian states has been a long-standing challenge in quantum optics.
Optimal verification of the Bell state and Greenberger–Horne–Zeilinger states in untrusted quantum networks
npj Quantum Information, Published online: 26 November 2021; doi:10.1038/s41534-021-00499-8 Optimal verification of the Bell state and Greenberger–Horne–Zeilinger states in untrusted quantum networks
Many Body Seminar: Efficient simulation of operator hydrodynamics by damping many-body correlations
Daniel Malz (MPQ):A few days ago a paper by Curt von Keyserlingk, Frank Pollmann and Tibor Rakovszky appeared in which they give strong evidence that the time evolution of few-body correlators can be calculated efficiently […]