5 citations · 13 across the 11 of their papers we have counts for
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Higher-order covariance matrices for non-Gaussian quantum states
Vojtěch Kala, Petr Marek, Nicolas J. Cerf
Covariance matrices lie at the heart of the powerful and well-established symplectic framework for describing continuous-variable Gaussian quantum states. However, since this frame…
Picosecond Schrödinger cat states for ultrafast optical quantum processing
Mamoru Endo, Kan Takase, Takefumi Nomura +12
Non-Gaussian states are essential resources for universal, fault-tolerant optical quantum computing, but their generation rate remains limited by low heralding probabilities and op…
Generalization of catability for parity-less cat states
Michal Matulík, Jan Provazník, Petr Marek +1
We extend the nullifier-based certification framework of catability from parity-defined coherent cat states to parity-less Kerr cat states. Since Kerr cats cannot be distinguished…
Environment-Assisted Decoherence Suppression of Optical Non-Gaussian States
Akihiro Machinaga, Naoki Aritomi, Ryoga Sakurada +10
Optical loss is a common bottleneck in photonic quantum information processing, undermining the quantum advantage over classical approaches. Although several countermeasures, such…
Witnesses of non-Gaussian features as lower bounds of stellar rank
Jan Provazník, Šimon Bräuer, Vojtěch Kala +2
Quantum non-Gaussian states and operations serve as fundamental resources for universal quantum computation, error correction, and high-precision metrology, extending beyond the Ga…
Tuning Wave-Particle Duality of Quantum Light by Generalized Photon Subtraction
Kan Takase, Mamoru Endo, Fumiya Hanamura +11
Wave--particle duality is a hallmark of quantum mechanics. For bosonic systems, there exists a continuum of intermediate states bridging wave-like Schrödinger cat states and partic…
Nullifiers of non-Gaussian cluster states through homodyne measurement
Vojtěch Kala, Casper A. Breum, Mikkel V. Larsen +4
In continuous variable optical platforms, large-scale Gaussian cluster states have already been demonstrated, but non-Gaussian resources are essential to achieve universality and f…
Catability as a metric for evaluating superposed coherent states
Šimon Bräuer, Jan Provazník, Vojtěch Kala +1
Superposed coherent states are central to quantum technologies, yet their reliable identification remains a challenge, especially in noisy or resource-constrained settings. We intr…
Generalized squeezing as a witness
Šimon Bräuer, Tomáš Opatrný, Petr Marek
Quantum systems can be prepared in an infinite continuum of states, but only some of them can be used as resources for quantum technologies. Discerning whether a specific quantum s…
Genuine Continuous Quantumness
Vojtěch Kala, Jiří Fadrný, Michal Neset +3
Randomness is a key feature of quantum physics. Heisenberg's uncertainty principle reveals the existence of an intrinsic noise, usually explored through Gaussian squeezed states. D…
Nonlinear squeezing generation via multimode PDC and single photon measurement
Vojtěch Kala, Denis Kopylov, Petr Marek +1
Nonlinear squeezing is a property of non-Gaussian states of light with an important application in continuous variable quantum computing. We study the generation of nonlinear squee…