104 citations · 141 across the 10 of their papers we have counts for
10 papers
Lorentz canoncial forms of two-qubit states
Sudha, A. R. Usha Devi, B. N. Karthik +4
The Bloch sphere provides an elegant way of visualizing a qubit. Analogous representation of the simplest composite state of two-qubits has attracted significant attention. Here we…
Geometric picture for SLOCC classification of pure permutation symmetric three-qubit states
K. Anjali, I. Reena, Sudha +4
The quantum steering ellipsoid inscribed inside the Bloch sphere offers an elegant geometric visualization of two-qubit states shared between Alice and Bob. The set of Bloch vector…
Geometric picture for SLOCC classification of pure permutation symmetric three-qubit states
K. Anjali, I. Reena, Sudha +4
We show that the pure entangled three-qubit symmetric states which are inequivalent under stochastic local operations and classcial communication (SLOCC) exhibit distinct geometric…
Canonical forms of two-qubit states under local operations
Sudha, H. S. Karthik, Rajarshi Pal +4
Canonical forms of two-qubits under the action of stochastic local operations and classical communications (SLOCC) offer great insight for understanding non-locality and entangleme…
Geometric phases for finite-dimensional systems -- the roles of Bargmann Invariants, Null Phase Curves and the Schwinger Majorana SU(2) framework
K S Akhilesh, Arvind, S Chaturvedi +2
We present a study of the properties of Bargmann Invariants (BI) and Null Phase Curves (NPC) in the theory of the geometric phase for finite dimensional systems. A recent suggestio…
Monogamous nature of symmetric multiqubt states with distinct spinors
Sudha, K. S. Akhilesh, B. G. Divyamani +2
Monogamy relations place restrictions on the shareability of quantum corellations in multipartite states. Being an intrinsic quantum feature, monogamy property throws light on {\em…
Spin squeezing in Dicke-class of states with non-orthogonal spinors
K. S. Akhilesh, K. S. Mallesh, Sudha +1
The celebrated Majorana representation is exploited to investigate spin squeezing in different classes of pure symmetric states of N qubits with two distinct spinors, namely the Di…
Spin squeezing in symmetric multiqubit states with two distinct Majorana spinors
K. S. Akhilesh, B. G. Divyamani, Shenoy Sudha +2
Majorana geometric representation of pure N-qubit states obeying exchange symmetry is em- ployed to explore spin squeezing properties in the family of states with two distinct spin…
Spin squeezing of mixed systems
K. S. Mallesh, Swarnamala Sirsi, Mahmoud A. A. Sbaih +2
The notion of spin squeezing has been discussed in this paper using the density matrix formalism. Extending the definition of squeezing for pure states given by Kitagawa and Ueda i…
A generalized Pancharatnam geometric phase formula for three level systems
Arvind, K. S. Mallesh, N. Mukunda
We describe a generalisation of the well known Pancharatnam geometric phase formula for two level systems, to evolution of a three-level system along a geodesic triangle in state s…