Petz, Dénes and Ruppert, László and Szántó, András (2014) Conditional SIC-POVMs. IEEE TRANSACTIONS ON INFORMATION THEORY, 60 (1). pp. 351-356. ISSN 0018-9448
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Abstract
In this paper, we examine a generalization of the symmetric informationally complete POVMs. SIC-POVMs are the optimal measurements for full quantum tomography, but if some parameters of the density matrix are known, then the optimal SIC POVM should be orthogonal to a subspace. This gives the concept of the conditional SIC-POVM. The existence is not known in general, but we give a result in the special case when the diagonal is known of the density matrix. © 1963-2012 IEEE.
| Item Type: | Article |
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| Uncontrolled Keywords: | Quasi-orthogonality; quantum state tomography; POVM; difference set |
| Subjects: | Q Science / természettudomány > QA Mathematics / matematika |
| SWORD Depositor: | MTMT SWORD |
| Depositing User: | MTMT SWORD |
| Date Deposited: | 18 Feb 2015 15:28 |
| Last Modified: | 18 Feb 2015 15:28 |
| URI: | http://real.mtak.hu/id/eprint/21936 |
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