@informaq.bsky.socialShows how quantum gates with programmable phase angles can be teleported via measurement-based protocols, with phase parameters supplied classically or encoded in quantum program states. Verified on IBM Torino superconducting processor.
@informaq.bsky.socialPDRAG achieves 5.27×10⁵-fold leakage reduction in superconducting qubit gates through simultaneous control of both leakage channels using derivative-based pulse shaping, with endpoint leakage reaching 1.98×10⁻⁷ at 13 ns.
@informaq.bsky.socialWe demonstrated the cubic phase gate experimentally using optimized state-dependent force pulses on trapped ions. This nonlinear quantum operation is essential for universal continuous-variable quantum computing, validating theory with direct experimental proof.
@informaq.bsky.socialClosed paths of observable algebras enable universal control through holonomy. Shows every inner logical gate and equal-type sector permutation is attainable via adiabatic implementation with gapped Hamiltonians.
@informaq.bsky.socialComprehensive theoretical analysis of laser phase noise impact on Mølmer-Sørensen gates in trapped-ion quantum computing. Identifies two critical noise regimes and derives analytical filter functions and error estimates for gate fidelity prediction.
@informaq.bsky.socialResearchers achieved ~99.9% fidelity CZ gate for soft 0-π qubits, enabling multi-qubit operations previously impossible with this long-lived qubit architecture and advancing toward practical fault-tolerant quantum computers.
@informaq.bsky.socialAnalysis reveals fundamental trade-off in photonic CZ gates: optimizing two-photon phase shifts distorts single-photon wave packets, limiting gate fidelity to ~60% with passive emitter-cavity systems in waveguides.
@informaq.bsky.socialUnified framework predicts photonic CNOT gate fidelity across different single-photon platforms using Hong-Ou-Mandel visibility and second-order coherence, establishing multiphoton emission as fundamental error source comparable to indistinguishability.
@informaq.bsky.socialResearchers demonstrate universal quantum gates for higher-dimensional qudits using optimized d-pod configurations with trapped atoms and ions, requiring fewer control pulses and enabling more efficient quantum computation.
@informaq.bsky.socialResearchers achieve polylogarithmic scaling for non-Gaussian phase gate synthesis via qubit-oscillator Rabi control, eliminating numerical optimization and advancing continuous-variable quantum computation efficiency.
@informaq.bsky.socialHigh-fidelity remote two-qubit gates demonstrated between superconducting qubits via coaxial cable with infidelity below 10⁻⁶. This approach enables scalable modular quantum computing without additional tunable coupling elements.
@informaq.bsky.socialDemonstrated high-fidelity controlled-Z gate for hybrid superconducting qubits achieving 99.99% fidelity in 25ns using single-parameter flux control, with negligible leakage and robust scalability to larger architectures.
@informaq.bsky.socialProposes an unprotected CZ gate for capacitively coupled soft 0-π qubits with simulated fidelity of ~99.9% at ~160ns gate time, addressing the gap in two-qubit gate implementations for this promising protected qubit platform.
@informaq.bsky.socialNovel superconducting qubit gates using Landau-Zener interference enable tunable control frequencies from baseband to hundreds of MHz with gate speeds approaching full coupling strength. Demonstrated on two platforms with ~98% fidelity.
@informaq.bsky.socialResearchers at ParityQC and University of Innsbruck demonstrated native iSWAP and parameterized exchange gates for neutral atom quantum processors, significantly expanding beyond conventional Rydberg-blockade-based entangling gates with high fidelity.
@informaq.bsky.socialNovel theoretical framework accurately predicts parametric quantum gate dynamics in strongly driven regimes where conventional models fail, enabling faster, more efficient superconducting quantum gate operations without demanding computational simulations.
@informaq.bsky.socialHeilongjiang University researchers demonstrated a quantum controlled-Y gate using a metasurface achieving 0.9885 matrix fidelity. The 26-pillar amorphous-silicon structure performs beam splitting and two-photon interference for universal quantum computation.
@informaq.bsky.socialChameleon gates enable quantum operations that dynamically adapt based on quantum signals, allowing simulation of nonlinear quantum evolutions on current quantum hardware platforms.