https://bsky.app/profile/qit-cqt.bsky.socialhttps://bsky.app/profile/qit-cqt.bsky.social/post/3mva5fuqbyk2iA tale of two proofs of the strong converse for quantum capacity, and maybe also one about how to use AI for science without losing the fun in the process: https://marcotom.info/the-tale-of-two-proofs-of-the-strong-converse/11 Sep 2026 08:26 +0000at://did:plc:y2vde6fps5axtj6dtycquse3/app.bsky.feed.post/3mva5fuqbyk2ihttps://bsky.app/profile/qit-cqt.bsky.social/post/3mcginhhq322qQuantum Toolbox (15): Relating Relative Entropy and Fidelity (1/6):15 Jan 2026 02:04 +0000at://did:plc:y2vde6fps5axtj6dtycquse3/app.bsky.feed.post/3mcginhhq322qhttps://bsky.app/profile/qit-cqt.bsky.social/post/3mcginhhq322qQuantum Toolbox (15): Relating Relative Entropy and Fidelity (1/6):15 Jan 2026 02:04 +0000at://did:plc:y2vde6fps5axtj6dtycquse3/app.bsky.feed.post/3mcginhhq322qhttps://bsky.app/profile/qit-cqt.bsky.social/post/3mb6pkwvttk2uQuantum Toolbox (14): Quantum Pinsker Inequality (1/6)30 Dec 2025 06:22 +0000at://did:plc:y2vde6fps5axtj6dtycquse3/app.bsky.feed.post/3mb6pkwvttk2uhttps://bsky.app/profile/qit-cqt.bsky.social/post/3m75foutn4k2dQuantum Toolbox (13): Matrix Geometric Mean (1/7)04 Dec 2025 07:02 +0000at://did:plc:y2vde6fps5axtj6dtycquse3/app.bsky.feed.post/3m75foutn4k2dhttps://bsky.app/profile/qit-cqt.bsky.social/post/3m75foutn4k2dQuantum Toolbox (13): Matrix Geometric Mean (1/7)04 Dec 2025 07:02 +0000at://did:plc:y2vde6fps5axtj6dtycquse3/app.bsky.feed.post/3m75foutn4k2dhttps://bsky.app/profile/qit-cqt.bsky.social/post/3m4tsv3wiss2zQuantum Toolbox (12): Bretagnolle-Huber Inequality (1/6)05 Nov 2025 00:41 +0000at://did:plc:y2vde6fps5axtj6dtycquse3/app.bsky.feed.post/3m4tsv3wiss2zhttps://bsky.app/profile/qit-cqt.bsky.social/post/3m3bndp37kc2gQuantum Toolbox (11): Generalized Operator Schwarz Inequality (1/6)16 Oct 2025 01:49 +0000at://did:plc:y2vde6fps5axtj6dtycquse3/app.bsky.feed.post/3m3bndp37kc2ghttps://bsky.app/profile/qit-cqt.bsky.social/post/3lzww5m3jzk2lQuantum Toolbox (10): Uhlmann's Theorem (1/6)29 Sep 2025 02:02 +0000at://did:plc:y2vde6fps5axtj6dtycquse3/app.bsky.feed.post/3lzww5m3jzk2lhttps://bsky.app/profile/qit-cqt.bsky.social/post/3lyi3jnhsz22fQuantum Toolbox (9): Sample Complexity Lower Bounds via Mutual Information (1/6)10 Sep 2025 11:03 +0000at://did:plc:y2vde6fps5axtj6dtycquse3/app.bsky.feed.post/3lyi3jnhsz22fhttps://bsky.app/profile/qit-cqt.bsky.social/post/3lvdhdeeudk2tQuantum Toolbox (8): Hadamard's Three-Lines Theorem (1/6)01 Aug 2025 10:35 +0000at://did:plc:y2vde6fps5axtj6dtycquse3/app.bsky.feed.post/3lvdhdeeudk2thttps://bsky.app/profile/qit-cqt.bsky.social/post/3lt77x6c5ts2iQuantum Toolbox (7): Continuity of the von Neumann Entropy (1/6)05 Jul 2025 07:22 +0000at://did:plc:y2vde6fps5axtj6dtycquse3/app.bsky.feed.post/3lt77x6c5ts2ihttps://bsky.app/profile/qit-cqt.bsky.social/post/3lriir3d4b22uWe are happy to share our work in classical distribution testing "Testing (Conditional) Mutual Information" (arxiv.org/abs/2506.03894), which was recently accepted at COLT 2025. (1/6) https://arxiv.org/abs/2506.0389413 Jun 2025 13:04 +0000at://did:plc:y2vde6fps5axtj6dtycquse3/app.bsky.feed.post/3lriir3d4b22uhttps://bsky.app/profile/qit-cqt.bsky.social/post/3lrctelkbck2cQuantum Toolbox (6): Hoeffding's Inequality (1/7)11 Jun 2025 06:57 +0000at://did:plc:y2vde6fps5axtj6dtycquse3/app.bsky.feed.post/3lrctelkbck2chttps://bsky.app/profile/qit-cqt.bsky.social/post/3lqykgconec2sOur work "Learning pure quantum states (almost) without regret" (arxiv.org/abs/2406.18370) has received an important extension! We connect the notion of regret with the disturbance caused by projective measurements to efficiently learn pure states (almost) without disturbance. (1/3) https://arxiv.org/abs/2406.1837007 Jun 2025 04:51 +0000at://did:plc:y2vde6fps5axtj6dtycquse3/app.bsky.feed.post/3lqykgconec2shttps://bsky.app/profile/qit-cqt.bsky.social/post/3lqwfdynkoc2tQuantum Toolbox (5): Cauchy-Schwarz Inequality (1/6)06 Jun 2025 08:15 +0000at://did:plc:y2vde6fps5axtj6dtycquse3/app.bsky.feed.post/3lqwfdynkoc2thttps://bsky.app/profile/qit-cqt.bsky.social/post/3lptn7te3tk2eQuantum Toolbox (4): Jordan's Lemma (1/6)23 May 2025 12:32 +0000at://did:plc:y2vde6fps5axtj6dtycquse3/app.bsky.feed.post/3lptn7te3tk2ehttps://bsky.app/profile/qit-cqt.bsky.social/post/3lpojpntctc2sQuantum state-agnostic work extraction (almost) without dissipation: We are excited to share a new application of the multi-armed quantum bandit framework—this time in quantum thermodynamics!21 May 2025 11:46 +0000at://did:plc:y2vde6fps5axtj6dtycquse3/app.bsky.feed.post/3lpojpntctc2shttps://bsky.app/profile/qit-cqt.bsky.social/post/3lpjemsun6s25We were excited to host @christophhirche.bsky.social as an outgoing MSCA postdoc here in Singapore and are ready to host again whenever scientific interests align. [contains quote post or other embedded content]19 May 2025 10:32 +0000at://did:plc:y2vde6fps5axtj6dtycquse3/app.bsky.feed.post/3lpjemsun6s25https://bsky.app/profile/qit-cqt.bsky.social/post/3lopesj5g6k2jQuantum Toolbox (3): Data-Processing Inequality (1/7)09 May 2025 02:26 +0000at://did:plc:y2vde6fps5axtj6dtycquse3/app.bsky.feed.post/3lopesj5g6k2jhttps://bsky.app/profile/qit-cqt.bsky.social/post/3lodtrebr7k2zQuantum Toolbox (2): Schur-Weyl Duality (1/6)04 May 2025 12:22 +0000at://did:plc:y2vde6fps5axtj6dtycquse3/app.bsky.feed.post/3lodtrebr7k2zhttps://bsky.app/profile/qit-cqt.bsky.social/post/3lnkfspaoys22Quantum Toolbox (1): Jensen's Inequality (1/6)24 Apr 2025 09:35 +0000at://did:plc:y2vde6fps5axtj6dtycquse3/app.bsky.feed.post/3lnkfspaoys22