Landauer’s principle states that a minimum amount of dissipation is required to erase one bit of information. Reaching this bound in practice requires infinite resources (either infinite time or infinite energy), a fact that is intimately connected to the second and third laws of thermodynamics. In the presence of finite resources, it becomes a challenging problem to identify optimal erasure processes that minimize the generation of dissipation. In this talk, I will present progress in this question based on a geometric approach to finite-time thermodynamics [1]. In particular, I will focus on three different but interconnected directions: <\/p>\n
– The minimisation of dissipation in driven open quantum systems [2], including a recent implementation of Landauer erasure on a driven electron level in a semiconductor quantum dot [3]. <\/p>\n
– The minimisation of dissipation in strongly coupled systems, and in particular I will present a finite-time version of Landauer\u2019s principle for a quantum dot strongly coupled to a fermionic bath [4].<\/p>\n
– The minimisation of dissipation in finite quantum systems with a high level of control (i.e. allowing arbitrary unitary operations), where I will discuss finite-size corrections to Landauer’s principle [5]. <\/p>\n
<\/p>\n
[1] Abiuso, Miller, M. P.-L., Scandi Entropy 22 (10), 1076 (2020).<\/p>\n
[2] Scandi, M. P.-L., Quantum 3, 197 (2019). <\/p>\n
[3] Scandi, Barker, Lehmann, Dick, Maisi, M. P.-L., arXiv:2209.01852 (2022). <\/p>\n
[4] Rolandi, M. P.-L., in preparation.<\/p>\n
[5] Lipka-Bartosik, M. P.-L., in preparation.<\/p>\n","protected":false},"excerpt":{"rendered":"
Landauer’s principle states that a minimum amount of dissipation is required to erase one bit of information. Reaching this bound in practice requires infinite resources (either infinite time or infinite energy), a fact that is intimately connected to the second and third laws of thermodynamics. In the presence of finite resources, it becomes a challenging […]<\/p>\n","protected":false},"author":20,"featured_media":0,"template":"","class_list":["post-1268","seminar","type-seminar","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/webs.uab.cat\/giq\/wp-json\/wp\/v2\/seminar\/1268","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/webs.uab.cat\/giq\/wp-json\/wp\/v2\/seminar"}],"about":[{"href":"https:\/\/webs.uab.cat\/giq\/wp-json\/wp\/v2\/types\/seminar"}],"author":[{"embeddable":true,"href":"https:\/\/webs.uab.cat\/giq\/wp-json\/wp\/v2\/users\/20"}],"wp:attachment":[{"href":"https:\/\/webs.uab.cat\/giq\/wp-json\/wp\/v2\/media?parent=1268"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}