1+ hour, 55+ min ago  (1327+ words) A thirty per cent reduction in quantum circuit size, achieved through simple database reordering, challenges conventional wisdom in quantum algorithm design. This optimisation, applied before Exclusive Sum-of-Products minimisation, demonstrates that the arrangement of data profoundly impacts circuit complexity. Exploiting this…...

1+ day, 4+ min ago  (824+ words) The University of Jyv'skyl' is participating in SPINS, a European project funded with 50 million euros, to advance quantum computing using semiconductor-based spin qubits. This collaboration of 25 European partners aims to develop quantum chips and strengthen Europe's position in the growing…...

1+ day, 22+ hour ago  (932+ words) Updating arrangements of over one thousand atoms without losing a single one previously took considerably longer and risked instability. Now, a new computational method achieves demonstrably faster and more reliable reconfiguration of these arrays in simulation. This advance tackles a…...

1+ day, 22+ hour ago  (1076+ words) What quantum computer to buy? For years, institutions have approached the question as simply selecting hardware, overlooking the crucial difference between accessing capability and owning a machine. This work defines five distinct layers of quantum procurement, from cloud access to…...

1+ day, 22+ hour ago  (1163+ words) Evaluating Future Air Traffic Management Security A 32-bit challenge set within a proposed aviation security system can map to over four billion responses, creating a predictable vulnerability. This research demonstrates that such physical unclonable functions are susceptible to both advanced…...

2+ day, 17+ hour ago  (814+ words) Equal1 is integrating Q-CTRL's Boulder Opal Scale Up software into its silicon quantum computers, enabling autonomous operation and simplifying maintenance of qubits. This partnership aims to deliver data center-ready quantum computing at scale. https: //quantumzeitgeist. com/wp-content/uploads/eql1. png Equal1 Bell-1 System…...

2+ day, 21+ hour ago  (135+ words) Previously, continuous-variable quantum key distribution relied on discrete components, hindering practical deployment. Now, a fully integrated silicon photonic transceiver, utilising polarisation multiplexing, transmits a secret key at 1. 9 Mbit/s over 25km of fibre. https: //quantumzeitgeist. com/wp-content/uploads/secure-data-transmission-reaches-19-mbits-over-25km-fibre-optic-link....

2+ day, 21+ hour ago  (1331+ words) Can syndrome extraction circuits for the planar colour code ever truly preserve the full circuit-level distance. A new circuit achieves a ratio of ntot/d2 circ of approximately 9/8, improving on previous methods that resulted in ratios of 9/2 or 3 for similar circuits....

2+ day, 21+ hour ago  (741+ words) Until now, systematically comparing the Goos-H'nchen shift across different parity-time phases has remained an open challenge. This work demonstrates markedly enhanced lateral beam shifts in an unbroken parity-time regime, exceeding those observed in both broken phases and conventional passive configurations....

2+ day, 21+ hour ago  (1132+ words) Ninety-nine point nine per cent median single-qubit gate fidelity, measured across eighteen working qubits, suggests a path beyond the limitations of bespoke quantum processors. This germanium-based array achieves simultaneous control and readout, moving towards a scalable architecture previously hampered by…...