Quantum-LLvlN

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Quantum-LLvlN is a conceptual variant of LLvlN that introduces quantum computing features and quantum-themed instructions while keeping the original whimsical food/cooking metaphor. Quantum-LLvlN is designed as an esolang for educational or experimental purposes—not as a realistic quantum computer simulator but as a playful exploration of quantum programming principles within the LLvlN framework.

Overview

Quantum-LLvlN extends LLvlN with:

  • Quantum "qubit" registers: QSOUP, QCAKE, QMEAT, QFISH
  • Quantum gate instructions (QSET, QHAD, QFLIP, QCNOT, QPHASE, QROT)
  • Superposition and entanglement for registers
  • Quantum measurement (QMEASURE) producing classical bits
  • Probabilistic control flow (QSPICE)
  • Quantum stack operations (QBAKE, QCHOP)
  • Classical LLvlN instructions (for mixing classical/quantum code)

The language is intended for illustrating quantum logic and probabilistic computation in a format accessible to esolang fans—not for simulating real quantum devices.

Language Specification

Quantum Registers

  • QSOUP, QCAKE, QMEAT, QFISH (initialized to |0⟩)
  • Each register represents a qubit

Quantum Instructions

  • QSET <qreg> 0/1 — Initialize qubit to |0⟩ or |1⟩
  • QHAD <qreg> — Apply Hadamard gate (put in superposition)
  • QFLIP <qreg> — Apply X (NOT) gate
  • QCNOT <control> <target> — Controlled-NOT entanglement
  • QPHASE <qreg> <angle> — Phase shift gate
  • QROT <qreg> <axis> <angle> — Arbitrary axis rotation
  • QMEASURE <qreg> <reg> — Measure qubit, place result (0/1) into classical register
  • QSPICE <reg> <label> — If result of QMEASURE is 1, jump to label

Quantum Stack Operations

  • QBAKE <qreg> — Push qubit register onto quantum stack
  • QCHOP <qreg> — Pop value from quantum stack into qubit register

Classical Integration

  • All classical LLvlN instructions preserved and usable

Syntax Rules

  • One instruction per line, case-insensitive, comments with #
  • Qubit and classical registers are disjoint
  • Classical and quantum instructions may be freely mixed (as allowed by type)

Example Programs

Bell State (Entangled Pair)

RECIPE
QSET QSOUP 0
QSET QCAKE 0
QHAD QSOUP
QCNOT QSOUP QCAKE
QMEASURE QSOUP SOUP
QMEASURE QCAKE CAKE
SERVE SOUP
SERVE CAKE
DONE

Quantum Coin Flip

RECIPE
QSET QSOUP 0
QHAD QSOUP
QMEASURE QSOUP SOUP
SERVE SOUP
DONE

Implementation Notes

  • Qubit registers store idealized quantum states; QMEASURE result is probabilistic
  • Simulate amplitudes or just probabilities; no genuine quantum computation is required
  • Invalid operations or multiple consecutive measurements should error or be consistent per program run
  • Type safety—classical/quantum registers must not be confused

Differences from LLvlN

  • Adds qubit registers and quantum gate instructions
  • Probabilistic and entangling control flow
  • Blends quantum and classical operations

See Also

  • LLvlN — Base language
  • LLvlN-FLOAT — Floating-point variant
  • LLvlN++ — Procedural/modern variant
  • Quipper — Quantum esolang
  • Q♯ — Mainstream quantum programming language

Variants

  • LLvlN-FLOAT
  • LLvlN++