Atomic Institute of TU Wien Develops Quantum Cryptographic Keys Faster, Far More Robust Against Interference
Quantum cryptography Records with Higher-Dimensional Photons Quantum cryptography is one of the most promising quantum technologies of our time: Exactly the same information is generated at two different locations, and the laws of quantum physics guarantee that no third party can intercept this information. This creates a code with which information can be perfectly encrypted. […]
New Avenue to Scale Quantum Systems Opens Up With Help From Superconducting, Super-Cold Device
Light meets superconducting circuits Read More… + But quantum signals can be contaminated by thermal noise generated by the movement of electrons. To prevent this, superconducting quantum systems must operate at ultra-low temperatures – less than 20 milli-Kelvin – which can be achieved with cryogenic helium-dilution refrigerators. “We demonstrate a proof-of-principle experiment using a novel […]
U.S. DoD Funded Machine Learning Enabling Photonic Quantum System Corrections of Battlefield Quantum Technologies
Machine learning shows potential to enhance quantum information transfer RESEARCH TRIANGLE PARK, N.C. – Army-funded researchers demonstrated a machine learning approach that corrects quantum information in systems composed of photons, improving the outlook for deploying quantum sensing and quantum communications technologies on the battlefield. When photons are used as the carriers of quantum information to […]
Avoiding Postselection in Quantum Measurements
A protocol to explore entanglement dynamics via spacetime duality Read More… + Researchers at Stanford University have recently carried out a study exploring the role of quantum measurements in many-body dynamics. In their paper, published in Physical Review Letters, they specifically presented a protocol that can be used to realize dynamics that include quantum measurements […]
Experiment Success: Twenty Year-Old Protocol Doubles Quantum Bit – Qubit – Lifetime
Experiment Success: Twenty Year-Old Protocol Doubles Quantum Bit – Qubit – Lifetime Quantum error correction achieved using oscillator grid states Selected notes ~ + A practical implementation of a quantum error correction protocol first proposed back in 2001 has been achieved by physicists in the US and France. The protocol increases the coherence time of […]
U.S. National Science Foundation Seeks Requests for Funding of Commercial Quantum Cloud Computing Platform Use
U.S. National Science Foundation Seeks Requests for Funding of Commercial Quantum Cloud Computing Platform Use Dear Colleague Letter: Enabling Quantum Computing Platform Access for National Science Foundation Researchers with Amazon Web Services, IBM, and Microsoft Quantum Excerpts and salient points ~ + With this Dear Colleague Letter (DCL), NSF’s Directorate for Computer and Information Science […]
Research Group Proposes Protocols Which Enable Measurement of Topological Invariants
Research Group Proposes Protocols Which Enable Measurement of Topological Invariants Protocol identifies fascinating quantum states Points to note… + Nowadays, modern quantum simulators offer a wide range of possibilities to prepare and investigate complex quantum states. They are realized with ultracold atoms in optical lattices, Rydberg atoms, trapped ions or superconducting quantum bits. A particularly […]
Research: Let The Quantum Server Search Alice’s Encrypted Data Without Decryption
Research: Let The Quantum Server Search Alice’s Encrypted Data Without Decryption Quantum Search on Encrypted Data Based on Quantum Homomorphic Encryption Abstract We propose a homomorphic search protocol based on quantum homomorphic encryption, in which a client Alice with limited quantum ability can give her encrypted data to a powerful but untrusted quantum server and […]
Paving the Way to New Device-Independent Quantum Key Distribution Devices
Paving the Way to New Device-Independent Quantum Key Distribution Devices Applying advantage distillation to device-independent quantum key distribution (DIQKD) Selected notes ~ + Currently, several physicists are trying to improve existing DIQKD systems: experimentalists by reducing noise in communicating devices and theorists by developing protocols that are less demanding in terms of noise tolerance. The […]
MIT and Google Design System to Verify Accuracy of Complex Quantum Computing Operations
MIT and Google Design System to Verify Accuracy of Complex Quantum Computing Operations How to verify that quantum chips are computing correctly Selected notes ~ + Full-scale quantum computers will require millions of qubits, which isn’t yet feasible. In the past few years, researchers have started developing “Noisy Intermediate Scale Quantum” (NISQ) chips, which contain […]