quos 0.0.13

Quos package simplifies plotting and simulating a quantum computing circuit employing oscillatory qudits.

Quos package

Quos package simplifies plotting and simulating a quantum computing circuit employing oscillatory qubits.

To install

pip install matplotlib
pip install pandas
pip install quos

To upgrade

pip install --upgrade quos

Required packages

• matplotlib
• pandas

Included def functions in init.py file

• qhtm to show html file of list of quantum gates included here
• qxls to download quos.xlsm and qblo.xlsm files
• qstr for help to generate a string for a quantum circuit
• qplt to create a plot of a quantum circuit based on a string
• qmat for help to multiply a matrix and a vector to generate a vector
• qblo for help to plot Bloch spheres for a dataframe of qubits
• qsim to simulate a quantum circuit based on a string

Included gates in plots and simulations

• Qubits

• 0: qubit in state 0

• 1: Qubit in state 1

• Q: Qubit in an arbitrary state specified by two angle arguments

• Individual gates without any argument

• I: Identity

• H: Hadamard

• X: (Pauli) X gate

• Y: (Pauli) Y gate

• Z: (Pauli) Z gate

• S: S (sqrt Z) phase

• T: T (Pi/8 phase gate)

• V: V (sqrt X) phase

• Individual gates with one angle argument

• Rx: Rotation around X

• Ry: Rotation around Y

• Rz: Rotation around Z

• Ph: Global phase gate

• Pp: Phase gate for second state

• Individual gates with three angle arguments

• U: Universal rotation around arbitrary axis

• Interactive gates

• C: Controls another gate: Needs affected gate

• Cd: Reverse-controls another gate: Needs affected gate

• Sw: Swaps with another gate: Needs connected Sw

• iSw: Imaginary swaps with another gate: Needs connected iSw

• Measurement related gates

• M: Measurement gate

• O: Observation gate

These gates can work for qudits after some modifications.

qhtm to show html file of list of quantum gates included here

import quos
quos.qdoc()

qxls to download quos.xlsm and qblo.xlsm files

import quos
quos.qxls()

qstr for help to generate a string for a quantum circuit

import quos
SomeStringName = quos.qstr(xlsm="PathOfExcelXlsmFileWithGates", wsht="SpreadsheetWithGates")

Example string to represemt a quantum circuit

txt = '1,3,0|Q 30 15,5,0|H,a,1|Y,1,2|Z,2,2|X,3,2|Y,4,2|Z,5,2|X,6,2|S,2,3|T,4,3|V,6,3|'
txt = txt + 'Rx 30,1,4|Ry 15,2,4|Rz 15,3,4|Rz 30,4,4|Ry 15,5,4|Rx 15,6,4|Ph 15,2,5|'
txt = txt + 'Pp 30,4,5|O,a,6|Cd,1,7,Ph 15,2,7|U 30 30 15,4,7|U 15 15 30,6,7|'
txt = txt + 'C,1,8,X,2,9|Sw,4,8,Sw,6,8|iSw,3,9,iSw,4,9|M,a,10'

• 1 (qubit 1) on qubit 3 at time 0
• Q 30 15 (qubit with angles 30 15) on qubit 5 at time 0
• 0 (qubit 0) on other qubits at time 0
• H (Hadamard gate) on all qubits at time 1
• Y (Pauli Y gate) on qubit 1 at time 2 ...
• S (S gate) on qubit 2 at time 3 ...
• Rx 30 (rotation by 30 around X) on qubit 2 at time 4 ...
• Ph 15 (global phase gate by 15) on qubit 2 at time 5
• Pp 30 (phase gate for second state by 30) on qubit 4 at time 5
• O (Observer gate) on all qubits at time 6
• Cd (reverse control point) on qubit 1 at time 7 controlling Ph 15 on qubit 2 at time 7
• U 30 30 15 (rotation by 30 30 15 around X Y Z) on qubit 4 at time 7 ...
• C (control point) on qubit 1 at time 8 controlling X on qubit 2 at time 9
• Sw (swap) qubit 4 at time 8 with qubit 6 at time 8
• iSw (imaginary swap) qubit 3 at time 9 with qubit 4 at time 9
• M (Measurement gate) on all qubits at time 10

qplt to create a plot of a quantum circuit based on a string

import quos
quos.qplt(txt)

qblo to plot Bloch spheres for a dataframe of qubits

import quos
quos.qblo(PandasDataframeOfTimesequencenumberQuditsequencenumberStringOf0r|0i|1r|1i)

qsim to simulate a quantum circuit based on a stringTo simulate a circuit

import quos
quos.qsim(txt)

Version History

• 0.0.1 2023-11-07 Initial release
• 0.0.2 2023-11-07 Minor corrections
• 0.0.3 2023-11-07 Minor corrections
• 0.0.4 2023-11-07 Minor corrections
• 0.0.5 2023-11-09 Removed dependancy on networkx package
• 0.0.6 2023-11-09 Enabled plotting of CNOT gate
• 0.0.7 2023-11-10 Enabled arguments and plotting of qubits
• 0.0.8 2023-11-14 Enabled several other gates
• 0.0.9 2023-11-15 Enabled measurement gates
• 0.0.10 2023-11-16 Enabled Excel file output
• 0.0.11 2023-11-20 Enabled simulation in Excel file
• 0.0.12 2023-11-29 Enabled simulation and Bloch spheres
• 0.1.1 2023-12-02 Improved simulation and Bloch spheres