Tight Binding Hamiltonians and Quantum Turing Machines

نویسندگان

چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Transmission and Spectral Aspects of Tight Binding Hamiltonians For the Counting Quantum Turing Machine

1-D systems with deterministic disorder, such as those with quasiperiodic or substitution sequence potential distributions, have been much studied. It was recently shown that a generalization of quantum Turing machines (QTMs), in which potentials are associated with elementary steps or transitions of the computation, generates potential distributions along computation paths of states in some ba...

متن کامل

Some relations between quantum Turing machines and Turing machines

For quantum Turing machines we present three elements: Its components, its time evolution operator and its local transition function. The components are related with the components of deterministic Turing machines, the time evolution operator is related with the evolution of reversible Turing machines and the local transition function is related with the transition function of probabilistic and...

متن کامل

Tight-binding Hamiltonians for Carbon and Silicon1

We demonstrate that our tight-binding method { which is based on tting the energy bands and the total energy of rst-principles calculations as a function of volume { can be easily extended to accurately describe carbon and silicon. We present equations of state that give the correct energy ordering between structures. We also show that quantities that were not tted, such as elastic constants an...

متن کامل

Models of Quantum Turing Machines

Quantum Turing machines are discussed and reviewed in this paper. Most of the paper is concerned with processes defined by a step operator T that is used to construct a Hamiltonian H according to Feynman’s prescription. Differences between these models and the models of Deutsch are discussed and reviewed. It is emphasized that the models with H constructed from T include fully quantum mechanica...

متن کامل

Quantum chaos in quantum Turing machines

We investigate a 2-spin quantum Turing architecture, in which discrete local rotations αm of the Turing head spin alternate with quantum controlled NOT-operations. We demonstrate that a single chaotic parameter input αm leads to a chaotic dynamics in the entire Hilbert-space.

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Physical Review Letters

سال: 1997

ISSN: 0031-9007,1079-7114

DOI: 10.1103/physrevlett.78.590