منابع مشابه
Working within a complexity frame of reference –
‘ ... a simple system is one to which a notion of state can be assigned once and for all, or more generally, one in which Aristotelian causal categories can be independently segregated from one another. Any system for which such a description cannot be provided I will call complex. Thus, in a complex system, the causal categories become intertwined in such a way that no dualistic language of st...
متن کامل- - - - - - - - - - - - - - REFERENCE FRAME Chemistry : Blithe Sibling of Physics
As a physical chemist or chemical physicist, I've often had to react to uncomprehending or unkind re marks about chemistry delivered by physicists_ Typical of such remarks are "A diatomic molecule has one atom too many" and "A topic is dead when it has been turned over to the chemists." Both those dicta are attributed to Arthur Schawlow. Coming from him, though, such comments seem incon gruou...
متن کاملDynamics of a Quantum Reference Frame
We analyze a quantum mechanical gyroscope, which is modeled as a large spin and used as a reference against which to measure the angular momenta of spin-1/2 particles. These measurements induce a back-action on the reference which is the central focus of our study. We begin by deriving explicit expressions for the quantum channel representing the back-action. Then, we analyze the dynamics incur...
متن کاملDegradation of a quantum reference frame
Stephen D. Bartlett, Terry Rudolph, 3 Robert W. Spekkens, and Peter S. Turner School of Physics, The University of Sydney, Sydney, New South Wales 2006, Australia Optics Section, Blackett Laboratory, Imperial College London, London SW7 2BZ, United Kingdom Institute for Mathematical Sciences, Imperial College London, London SW7 2BW, United Kingdom Department of Applied Mathematics and Theoretica...
متن کاملSecret quantum communication of a reference frame.
We propose quantum-cryptographic protocols to secretly communicate a reference frame--unspeakable information in the sense it cannot be encoded into a string of bits. Two distant parties can secretly align their Cartesian axes by exchanging N spin-1/2 particles, achieving the optimal accuracy 1/N. A possible eavesdropper cannot gain any information without being detected.
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ژورنال
عنوان ژورنال: Journal of Physics A: Mathematical and Theoretical
سال: 2011
ISSN: 1751-8113,1751-8121
DOI: 10.1088/1751-8113/44/14/145304