5 papers
The Janus State: A Universal Lower Bound for Second-Order Coherence
Arash Azizi
A single-mode squeezed vacuum is a foundational quantum state that, despite its nonclassical nature, exhibits classical-like, super-Poissonian photon statistics. This feature motiv…
Quantum Fisher information and quadrature squeezing in Janus superpositions of squeezed vacua
Arash Azizi
Janus states, defined as coherent superpositions of two single-mode squeezed vacua, provide a simple but genuinely non-Gaussian setting for studying how interference reshapes quant…
Two-Mode Janus States: non-Gaussian generalizations of thermofield double
Arash Azizi
We introduce the Two-Mode Janus State (TMJS), a non-Gaussian quantum state defined as a coherent superposition of two distinct Two-Mode Squeezed States (TMSS). This construction se…
Tunable Non-Gaussianity and Exact Higher-Order Coherences for Quantum Advantage
Arash Azizi
Non-Gaussian states are essential for achieving a quantum advantage in continuous-variable (CV) information processing. Among these, coherent superpositions of squeezed states are…
Unitary reformulation of the thermofield double state and limits of cyclic multi-mode squeezing
Arash Azizi
We investigate the structure and uniqueness of squeezed vacuum states defined by annihilation conditions of the form and their multimode generaliz…