5 papers
Exploiting Translational Symmetry for Quantum Computing with Squeezed Cat Qubits
Tomohiro Shitara, Gabriel Mintzer, Yuuki Tokunaga +1
Translational symmetry plays an essential role in bosonic quantum error correction (QEC), most notably in the Gottesman-Kitaev-Preskill code. Squeezed cat (SC) codes provide a comp…
Quantum geometric tensor determines the pure-state i.i.d. conversion rate in the resource theory of asymmetry for any compact Lie group
Koji Yamaguchi, Yosuke Mitsuhashi, Tomohiro Shitara +1
Quantifying physical concepts in terms of the ultimate performance of a given task has been central to theoretical progress, as illustrated by thermodynamic entropy and entanglemen…
Systematic construction of digital autonomous quantum error correction for state preparation and error suppression via conditional Gaussian operations
Keitaro Anai, Suguru Endo, Shuntaro Takeda +1
In continuous-variable quantum computing, autonomous quantum error correction (QEC) can dissipatively steer a noisy quantum state into a target state or manifold, enabling robust q…
The i.i.d. State Convertibility in the Resource Theory of Asymmetry for Finite Groups
Tomohiro Shitara, Yosuke Mitsuhashi, Hiroyasu Tajima
We identify exact and approximate conversion rates between i.i.d. pure states under covariant operations in the resource theory of asymmetry for symmetries described by finite grou…
Non-Markovianity in Quantum Information Processing: Interplay with Quantum Error Mitigation
Suguru Endo, Hideaki Hakoshima, Tomohiro Shitara
Non-Markovian dynamics are typically present in the dynamics of open quantum systems. Despite the rich structure of non-Markovian dynamics, their relevance to quantum information p…