Lorentz canoncial forms of two-qubit states
- URL: http://arxiv.org/abs/2402.09258v2
- Date: Sat, 17 Feb 2024 05:30:53 GMT
- Title: Lorentz canoncial forms of two-qubit states
- Authors: Sudha, A. R. Usha Devi, B. N. Karthik, H. S. Karthik, Akshata Shenoy
H, K. S. Mallesh and A. V. Gopala Rao
- Abstract summary: The Bloch sphere provides an elegant way of visualizing a qubit.
We show a detailed mathematical analysis of the real-matrix parametrization and associated geometric picturization of arbitrary two-qubit states.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: 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 present a detailed mathematical analysis of the
real-matrix parametrization and associated geometric picturization of arbitrary
two-qubit states - up to their local SL2C equivalence, in terms of canonical
ellipsoids inscribed within the Bloch sphere.
Related papers
- Entanglement on Two Bloch Spheres: Exploring Two-Qubit Stabilizer Group Structure [0.0]
In this paper, we explore the graphical representation of two-qubit entanglement on two Bloch Spheres via stabilizer formalism.
We relate the density matrix to the graphical representation on two Bloch Spheres by showing how both may be derived from the stabilizer group structure of the state.
arXiv Detail & Related papers (2024-06-07T16:25:03Z) - Towards Two Bloch Sphere Representation of Pure Two Qubit States and Unitaries [0.0]
We identify Two Bloch Sphere geometry that is suitable for representing maximally entangled states.
Relative direction of coordinate axes of the two Bloch Spheres may be used to describe the states.
We describe and depict separable and maximally entangled states as well as entangling and non-entangling rotations.
arXiv Detail & Related papers (2024-03-15T17:03:53Z) - Symmetry-restricted quantum circuits are still well-behaved [45.89137831674385]
We show that quantum circuits restricted by a symmetry inherit the properties of the whole special unitary group $SU(2n)$.
It extends prior work on symmetric states to the operators and shows that the operator space follows the same structure as the state space.
arXiv Detail & Related papers (2024-02-26T06:23:39Z) - Quantum entanglement and contextuality with complexifications of $E_8$
root system [91.3755431537592]
The Witting configuration with 40 complex rays was suggested as a possible reformulation of Penrose model with two spin-3/2 systems based on geometry of dodecahedron.
An analysis of properties of suggested configuration of quantum states is provided using many analogies with properties of Witting configuration.
arXiv Detail & Related papers (2022-10-27T11:23:12Z) - Penrose dodecahedron, Witting configuration and quantum entanglement [55.2480439325792]
A model with two entangled spin-3/2 particles based on geometry of dodecahedron was suggested by Roger Penrose.
The model was later reformulated using so-called Witting configuration with 40 rays in 4D Hilbert space.
Two entangled systems with quantum states described by Witting configurations are discussed in presented work.
arXiv Detail & Related papers (2022-08-29T14:46:44Z) - Geometric picture for SLOCC classification of pure permutation symmetric
three-qubit states [0.0]
The quantum steering ellipsoids inscribed inside the Bloch sphere offer an elegant visualization of two-qubit states shared between Alice and Bob.
The steering ellipsoids are shown to be effective in capturing quantum correlation properties, such as monogamy.
We provide detailed analysis of the canonical forms and the associated steering ellipsoids of the reduced twoqubit states extracted from entangled three-qubit pure symmetric states.
arXiv Detail & Related papers (2022-08-05T07:36:27Z) - Geometric picture for SLOCC classification of pure permutation symmetric
three-qubit states [0.0]
We show that the pure entangled three-qubit states exhibit distinct geometric representation in terms of a spheroid inscribed within the Bloch sphere.
We provide detailed analysis of the SLOCC canonical forms of the reduced two-qubit states extracted from entangled three-qubit pure symmetric states.
arXiv Detail & Related papers (2022-04-20T16:24:26Z) - Quantum particle across Grushin singularity [77.34726150561087]
We study the phenomenon of transmission across the singularity that separates the two half-cylinders.
All the local realisations of the free (Laplace-Beltrami) quantum Hamiltonian are examined as non-equivalent protocols of transmission/reflection.
This allows to comprehend the distinguished status of the so-called bridging' transmission protocol previously identified in the literature.
arXiv Detail & Related papers (2020-11-27T12:53:23Z) - Canonical forms of two-qubit states under local operations [0.0]
We show how canonical forms of two-qubit states can be identified in classical polarization optics.
Our approach results in a simple geometric visualization of two-qubit states in terms of their SLOCC canonical forms.
arXiv Detail & Related papers (2020-07-01T18:37:20Z) - Models of zero-range interaction for the bosonic trimer at unitarity [91.3755431537592]
We present the construction of quantum Hamiltonians for a three-body system consisting of identical bosons mutually coupled by a two-body interaction of zero range.
For a large part of the presentation, infinite scattering length will be considered.
arXiv Detail & Related papers (2020-06-03T17:54:43Z) - Radiative topological biphoton states in modulated qubit arrays [105.54048699217668]
We study topological properties of bound pairs of photons in spatially-modulated qubit arrays coupled to a waveguide.
For open boundary condition, we find exotic topological bound-pair edge states with radiative losses.
By joining two structures with different spatial modulations, we find long-lived interface states which may have applications in storage and quantum information processing.
arXiv Detail & Related papers (2020-02-24T04:44:12Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.