When Alexei Efros moved with his family from Russia to California as a teenager in the 1980s, he brought his Soviet-built personal computer, an Elektronika BK-0010. The machine had no external storage and overheated every […]
Insider Brief IonQ announced that Dr. Chris Monroe will be leaving the company. Monroe served as the firm’s co-founder and chief science officer. He will be returning to his academic, research and policy pursuits. PRESS […]
Insider Brief Quandela delivered its first quantum computer, MosaiQ, to one of OVHcloud datacenters. OVHcloud becomes the first European cloud services provider to own a quantum system based on photonic processors. Three additional machines are […]
Quantum 7, 1154 (2023). https://doi.org/10.22331/q-2023-10-24-1154 We reduce the extra qubits needed for two fault-tolerant quantum computing protocols: error correction, specifically syndrome bit measurement, and cat state preparation. For distance-three fault-tolerant syndrome extraction, we show an […]
Quantum 7, 1153 (2023). https://doi.org/10.22331/q-2023-10-24-1153 The promise of high-rate low-density parity check (LDPC) codes to substantially reduce the overhead of fault-tolerant quantum computation depends on constructing efficient, fault-tolerant implementations of logical gates on such codes. […]
Quantum 7, 1152 (2023). https://doi.org/10.22331/q-2023-10-24-1152 We introduce a semidefinite programming algorithm to find the minimal quantum Fisher information compatible with an arbitrary dataset of mean values. This certification task allows one to quantify the resource […]
Quantum 7, 1151 (2023). https://doi.org/10.22331/q-2023-10-24-1151 Spiking neural network is a kind of neuromorphic computing that is believed to improve the level of intelligence and provide advantages for quantum computing. In this work, we address this […]
Insider Brief Atom Computing’s next-generation quantum computing platform will feature a 1,225-site atomic array and populated with 1,180 qubits. This is the first time a company has crossed the 1,000-qubit threshold for a universal gate-based […]
Quantum 7, 1150 (2023). https://doi.org/10.22331/q-2023-10-24-1150 Bell’s theorem states that Local Hidden Variables (LHVs) cannot fully explain the statistics of measurements on some entangled quantum states. It is natural to ask how much supplementary classical communication […]
Quantum 7, 1149 (2023). https://doi.org/10.22331/q-2023-10-24-1149 We analyze the amount of classical communication required to reproduce the statistics of local projective measurements on a general pair of entangled qubits, $|Psi_{AB}rangle=sqrt{p} |00rangle+sqrt{1-p} |11rangle$ (with $1/2leq p leq […]
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