Yosuke Mitsuhashi

Postdoctoral researcher at RIKEN

[Yosuke Mitsuhashi @YM_physics]

Our paper has been published in PRL!
We have characterized the quantum randomness generated in symmetric local random unitary circuits by using unitary designs.
https://t.co/lFdWIv2K7U

Thank you for the great collaboration, @ryotarosuzuki_, Tomohiro Soejima, and @komoinv.

[Physical Review X @PhysRevX]

Symmetry breaking had only been quantified for the simplest case among continuous symmetries — the U(1) group — until now. A new study establishes the quantum geometric tensor as the complete measure of symmetry breaking for any compact Lie group.

🔗 https://t.co/JF5FRP5dP9

[Nobuyuki Yoshioka @komoinv]

三橋洋亮さんを主著とする、対称性のあるランダム量子回路におけるランダムネスの階層構造を数学的に解明した論文がPRL・PRAに同時掲載され、プレス配信をしていただきました。

三橋さん、改めておめでとうございます！
https://t.co/fckWQQf5z8

[Nobuyuki Yoshioka @komoinv]

Thrilled to share that seminal works on unitary designs of symmetric local random circuits have been published jointly in PRL and PRA.

Yosuke Mitsuhashi will give a talk at TQC 2025. Don't miss it!
https://t.co/uzqkrMraXV

[東京大学 | UTokyo @UTokyo_News]

[プレスリリース] 対称性が量子ランダム性の生成に与える影響を解明――量子ランダム性に階層構造が現れることを発見―――総合文化研究科・教養学部
https://t.co/008jn96wxo

[Toshihiro Yada @ToshihiroYada]

How does the choice of local random gates affect global randomness generation rate in quantum circuits?
In our new paper (https://t.co/myG2DubIeB), we resolve this open question by proving that non-Haar random circuits form unitary designs as fast as Haar random counterparts.

[Nobuyuki Yoshioka @komoinv]

Are local Haar random gates the best local scramblers?
Surprisingly, the answer is negative; some fixed structure in local gates can scramble even faster.

Congrats Ryotaro (@kjroooo) for great work, and thank you @YM_physics @jenseisert for collaboration!
https://t.co/LmGo6atfiZ

[Jens Eisert @jenseisert]

More global randomness from less random local gates

https://t.co/YtBeKjqqCo

Non-Haar local quantum gates can actually lead to more global randomness in #randomcircuits and can be better scramblers.

[Ryotaro Suzuki @ryotarosuzuki_]

Given a circuit architecture, which types of random gates are optimal for generating random unitaries? Maybe counter-intuitively, we show in
https://t.co/78Gw4Z8WL5 that Haar-random gates are not the best option. Instead, structured random gates can generate more randomness.

[Nobuyuki Yoshioka @komoinv]

Our paper on symmetric Clifford twirling is out!
We have established a framework of twirling that accelerates the white-noise approx to realize cost-optimal QEM in early FTQC. Congrats Kento, and thanks Yosuke and Kunal for the great collaboration!
https://t.co/sUypgPNZra

[PRX Quantum @PRX_Quantum]

The concept of unitary designs is extended to scenarios involving symmetry, which can be applied in the contexts of randomized benchmarking and many-body simulations. @YM_physics, @komoinv, @UTokyo_News_en

https://t.co/aegJLFs369

[Physical Review X @PhysRevX]

Characterizing Symmetry-Protected Thermal Equilibrium by Work Extraction https://t.co/u9iDe8QeiC #PRXjustpublished #openaccess