Departament de Física Quantum Information with Continuous Variable systems Grup de Física Teòrica
... to encode, process and extract information. It was Rolf Landauer, known among other things for his remarkable contributions to the theory of electrical conductivity, who at the end of 1960 coined the idea that information rather than an abstract mathematical concept, is at the very end a physical pr ...
... to encode, process and extract information. It was Rolf Landauer, known among other things for his remarkable contributions to the theory of electrical conductivity, who at the end of 1960 coined the idea that information rather than an abstract mathematical concept, is at the very end a physical pr ...
Bulk Locality and Quantum Error Correction in AdS/CFT arXiv
... naively a local operator in the center of the bulk should commute with every local operator at the boundary on a fixed time slice containing that bulk operator. This is not consistent, however, with a standard property of quantum field theory; any operator that commutes with all local operators at a ...
... naively a local operator in the center of the bulk should commute with every local operator at the boundary on a fixed time slice containing that bulk operator. This is not consistent, however, with a standard property of quantum field theory; any operator that commutes with all local operators at a ...
Entropy and Quantum Gravity arXiv:1504.00882v2 [gr
... These very basic assumptions are all that is needed to state our matter-gravity entanglement hypothesis and hence, for clarity, we have deliberately refrained at this point in the main text from mentioning any particular proposals for such approximate quantum gravity theories. Also we have refrained ...
... These very basic assumptions are all that is needed to state our matter-gravity entanglement hypothesis and hence, for clarity, we have deliberately refrained at this point in the main text from mentioning any particular proposals for such approximate quantum gravity theories. Also we have refrained ...
Continuous Measurement of an Atomic Current
... time evolution of the observed systems is described by the SSE in Eq. (4). Instead we can also decide not to read the measurement, so that the time evolution of the system traced over all possible measurement outcomes is described by a master equation for a system density operator ρ(t) derived from ...
... time evolution of the observed systems is described by the SSE in Eq. (4). Instead we can also decide not to read the measurement, so that the time evolution of the system traced over all possible measurement outcomes is described by a master equation for a system density operator ρ(t) derived from ...
Algebraic Topology Foundations of Supersymmetry and Symmetry
... basic techniques of Fourier analysis and convolution products. A natural generalization of such molecular, partial symmetries and their corresponding analytical versions involves convolution algebras – a functional/distribution [197, 198] based theory that we will discuss in the context of a more ge ...
... basic techniques of Fourier analysis and convolution products. A natural generalization of such molecular, partial symmetries and their corresponding analytical versions involves convolution algebras – a functional/distribution [197, 198] based theory that we will discuss in the context of a more ge ...
Quantum correlations and measurements
... an observations of quantum systems is beyond a classical expectation, our curiosity for understanding these effects awakes. The evolution of a quantum physical system is formulated in terms of the Schrödinger equation. A separation of the time dependent part yields the time-independent Schrödinger e ...
... an observations of quantum systems is beyond a classical expectation, our curiosity for understanding these effects awakes. The evolution of a quantum physical system is formulated in terms of the Schrödinger equation. A separation of the time dependent part yields the time-independent Schrödinger e ...
Elementary gates for quantum computation
... While reversible computation is contained within quanit is a small subset: the time evolution of a classical reversible computer is described by unitary operators whose matrix elements are only zero or one, arbitrary complex numbers are not allowed. Unitary time evolution can of course be simulated ...
... While reversible computation is contained within quanit is a small subset: the time evolution of a classical reversible computer is described by unitary operators whose matrix elements are only zero or one, arbitrary complex numbers are not allowed. Unitary time evolution can of course be simulated ...
memory effects in the dynamics of open quantum systems
... In quantum theory the time evolution of a system is given by a deterministic wave equation, the Schrödinger equation. Yet, observed quantum objects often exhibit irreversible behaviour not predicted by the standard theory. Irreversibility in the dynamics arises when the quantum system interacts with ...
... In quantum theory the time evolution of a system is given by a deterministic wave equation, the Schrödinger equation. Yet, observed quantum objects often exhibit irreversible behaviour not predicted by the standard theory. Irreversibility in the dynamics arises when the quantum system interacts with ...
2013-2014 Part III Guide to Courses
... simple Lie algebras by root data, covering all the structure theory necessary to get us there. Lie theory comes in many flavours and is important in finite group theory (with 26 exceptions all nonabelian finite simple groups come from Lie theoretic objects), number theory (notably the Langlands prog ...
... simple Lie algebras by root data, covering all the structure theory necessary to get us there. Lie theory comes in many flavours and is important in finite group theory (with 26 exceptions all nonabelian finite simple groups come from Lie theoretic objects), number theory (notably the Langlands prog ...
Theoretical Investigations Regarding Single Molecules
... In addition to the neoclassical valence bond theory, this work contains three projects related to molecular electronic quantum transport. Here we will present a quick technical overview of the topics, and reserve the general introduction to the corresponding chapters. Chapter 4 considers the investi ...
... In addition to the neoclassical valence bond theory, this work contains three projects related to molecular electronic quantum transport. Here we will present a quick technical overview of the topics, and reserve the general introduction to the corresponding chapters. Chapter 4 considers the investi ...