Entanglement in many-body systems from partial information
Flavio Baccari (MPQ)Quantum computing and quantum simulation experiments are reaching a regime where no classical simulation of their output is achievable.
Understanding potential topological quantum bits
Scientists have been looking for half an electron as a basis for a quantum computer. They investigated a promising experimental setup just to find that the signals they measured were not telling the truth. Read […]
Many body seminar: Summary of the “Entanglement in Quantum Fields” conference
Albert Gasull (MPQ):This week an interesting workshop on entanglement in QFT (and more generally) is happening in Heidelberg and online.
Elegant quantum teleportation with only one single photon
Scientists at MPQ succeed for the first time in teleporting quantum information encoded in an atomic qubit to a laboratory 60 meters away using just one single photon as a resource.
Decoding electron dynamics
Researchers propose a scheme to identify and weigh the quantum orbits in strong-field tunneling ionization. Read More Quantum Computers News — ScienceDaily
Nathalie Nagl is the “Female Physicist of the Week”
In the 26th calendar week and for a second time in 2021, yet another MPQ physicist has been named “female physicist of the week”: MPQ congratulates Nathalie Nagl, postdoctoral student in the Attosecond division.
A new piece of the quantum computing puzzle
Scientists have developed a groundbreaking quantum logic gate that brings quantum computing closer to reality. Read More Quantum Computers News — ScienceDaily
Quantum Information & Computing Meeting: Matchgate circuits and classical simulation of quantum computation
Esther Cruz (MPQ): Matchgate circuits refer to a class of quantum circuits that, like Clifford circuits, are classically simulable.
Synthesized with Laser Light
Using intense pulses of laser light, members of the attoworld team at the Max Planck Institute for Quantum Optics and the Ludwig-Maximilian University have synthesized trihydrogen ions from water molecules adsorbed onto nanoparticles.
Neutron optical test of completeness of quantum root-mean-square errors
npj Quantum Information, Published online: 28 June 2021; doi:10.1038/s41534-021-00437-8 Neutron optical test of completeness of quantum root-mean-square errors
Quantum simulation: Measurement of entanglement made easier
Researchers have developed a method to make previously hardly accessible properties in quantum systems measurable. The new method for determining the quantum state in quantum simulators reduces the number of necessary measurements and makes work with quantum simulators much more efficient.
Adaptive quantum state tomography with neural networks
npj Quantum Information, Published online: 24 June 2021; doi:10.1038/s41534-021-00436-9 Adaptive quantum state tomography with neural networks
Quantum repeaters based on concatenated bosonic and discrete-variable quantum codes
npj Quantum Information, Published online: 22 June 2021; doi:10.1038/s41534-021-00438-7 Quantum repeaters based on concatenated bosonic and discrete-variable quantum codes
Optimal two-qubit circuits for universal fault-tolerant quantum computation
npj Quantum Information, Published online: 22 June 2021; doi:10.1038/s41534-021-00424-z Optimal two-qubit circuits for universal fault-tolerant quantum computation
Quantum computing: Common perovskite superfluoresces at high temperatures
A commonly studied perovskite can superfluoresce at temperatures that are practical to achieve and at timescales long enough to make it potentially useful in quantum computing applications. Read More Quantum Computers News — ScienceDaily
New cold atom source lays groundwork for portable quantum devices
Researchers demonstrate a new high-flux and compact cold-atom source with low power consumption that can be a key component of many quantum technologies. Read More Quantum Computers News — ScienceDaily
Congratulations to Philip Walther on receiving the Friedrich Wilhelm Bessel Award!
The award honours internationally renowned scientists from abroad and aims to foster the exchange between Germany and the country of the awardee. From 22 June 2021, Professor Philipp Walther will be a guest scientist at […]
Special Seminar: What Rydberg can do for you (and me)
Prof. Hossein Sadeghpour (Director of ITAMP at Harvard/CFA)Rydberg physics is in vogue these days.
Compact quantum computer for server centers
Quantum computers have been one-of-a-kind devices that fill entire laboratories. Now, physicists have built a prototype of an ion trap quantum computer that can be used in industry. It fits into two 19-inch server racks […]
Highly tunable magneto-optical response from magnesium-vacancy color centers in diamond
npj Quantum Information, Published online: 18 June 2021; doi:10.1038/s41534-021-00439-6 Highly tunable magneto-optical response from magnesium-vacancy color centers in diamond
Classical variational simulation of the Quantum Approximate Optimization Algorithm
npj Quantum Information, Published online: 18 June 2021; doi:10.1038/s41534-021-00440-z Classical variational simulation of the Quantum Approximate Optimization Algorithm
Deep reinforcement learning for efficient measurement of quantum devices
npj Quantum Information, Published online: 18 June 2021; doi:10.1038/s41534-021-00434-x Deep reinforcement learning for efficient measurement of quantum devices
Physicists bring human-scale object to near standstill, reaching a quantum state
To the human eye, most stationary objects appear to be just that — still, and completely at rest. Yet if we were handed a quantum lens, allowing us to see objects at the scale of […]
New invention keeps qubits of light stable at room temperature
Researchers have developed a new technique that keeps quantum bits of light stable at room temperature instead of only working at -270 degrees. Their discovery saves power and money and is a breakthrough in quantum […]
Publisher Correction: Quantum nonlocality without entanglement: explicit dependence on prior probabilities of nonorthogonal mirror-symmetric states
npj Quantum Information, Published online: 17 June 2021; doi:10.1038/s41534-021-00441-y Publisher Correction: Quantum nonlocality without entanglement: explicit dependence on prior probabilities of nonorthogonal mirror-symmetric states