16 papers · 1 filter
Phase information beyond entanglement sudden death in coherence-to-entanglement conversion under post-gate noise
Asad Ali, Hashir Kuniyil, M. T Rahim +1
An ideal CNOT maps the phase of a coherent qubit onto the coherence between and of a two-qubit state, producing an output that carries both entanglement and e…
Analytic Benchmarks for Coherence-to-Entanglement Conversion under Post-Gate Noise in CNOT-Based Protocols
Asad Ali, H. Kuniyil, M. I. Hussain +3
Coherence-to-entanglement conversion transforms single-qubit superposition into a practical two-qubit resource, but noise limits this process in near-term quantum hardware. We deri…
Reservoir-independent lossless charging and protected storage of an open quantum battery
Asad Ali, H. Kuniyil, M. I Hussain +3
A quantum battery charged through a lossy intermediate state faces a structural trade-off between charging speed and dissipation. We show that an exact algebraic cancellation remov…
Counterdiabatic Raman Atom Optics for Compact High-Sensitivity Gravimetry
Asad Ali, Hamid Arian Zad, Saif Al-Kuwari +6
Large-momentum-transfer (LMT) atom interferometry provides a route toward enhanced inertial sensitivity in compact quantum sensors, but its scalability is limited by the accumulati…
High-dimensional coherence to entanglement transduction under canonical noise
Asad Ali, Aiham M. Rostom, Saif Al-Kuwari +3
We develop an analytical framework for coherence-to-entanglement conversion in bipartite high-dimensional quantum systems, so-called qunits. An arbitrary coherent input qunit is co…
Recovery-Induced Erasure Attack on QKD Systems
Hashir Kuniyil, Asad Ali, Syed M. Arslan +3
Detector dead time is typically treated as a fixed parameter in quantum key distribution (QKD) security analyses. In practice, however, the effective recovery time of single-photon…